What she says above, over many many months. My 11 Pro, fresh out of the box, sync was D O A.
But hey, it’s your thousand bucks, roll the dice! Just don’t trade in your old phone like some of us did, or you’re screwed.
Kinda shocking this is still an unsolved issue 
A few months ago I removed all projects from dropbox, re-added one at a time and sync’ed then opened in scrivener iOS, which worked for a few months I guess because today I open Scrivener to sync before heading out, crash. Same as before.
My IP 11 Pro worked fine out of the box with all projects synching.
I did sell my X and wasn’t ‘screwed’.
As AmberV stated it is a VERY small percentage impacted.
I’m happy for you.
Well, don’t bother mentioning it on here. Any minute now you’ll get “worked fine for me” and “your issue is part of a minuscule percentage” with a how DARE you be upset about this attitude in the response.
And I’m pleased you are.
The point is you blanket warning not to get an 11 or if you do keep your old phone has little (or no) validity.
No point in being snarky. L&L have pointed out repeatedly, as have other posters that this is NOT an L&L failure. Get snarky with Apple/Dropbox if that somehow makes you feel better.
Endlessly demanding a fix from L&L and getting shitty with anyone who reminds you of the facts for a problem that is not L&L’s creation achieves nothing other than reflecting on your inability to accept reality.
L&L are attempting to find an example of the failure to work with Apple & Dropbox. Unless they find one on their systems or a customer provides one any attempted fix is a total shot in the dark that may well cause even greater problems.
Oh spare me. I said it was a dice roll, didn’t I? It’s a known issue that many have been checking back in with every single month with no progress whatsoever. If he’s depending on it working out of the box, he’d better have a backup phone just in case.
Your dismissive snideness is unappreciated.
And to the original poster, welcome to this forum.
Gotcha.
How’s this. 5 months later, no fix.
See ya next month.
Well, this user is only one (Blessed Be The Holy Stats) but I, for one, have entirely given up on iOS Scrivener and will give up on Scrivener entirely by the end of my project. Instead of spending my valuable time to work around the bug and risk my too important work in progress, I used it to learn to replicate Scrivener features that I like in Ulysses and I have even made interesting discoveries that might speed up my workflow.
It’s a know issue that a small number of people have experienced from what we’ve seen here and L&L staff comments. Yes it’s frustrating in the extreme for those impacted, but let’s not blow it into a hysterical ‘Synchgate’.
Good luck with that!
Once upon a time there was a beautiful princess called Princess Amanda. Princess Amanda lived in a fabulous castle made of robust building materials that allowed for effective heat insulation (and thus was an extremely energy efficient living environment), yet still allowed for excellent mobile phone coverage indoors. It wasn’t so large that it constantly needed dusting, nor so small that every time Princess Amanda bought a new book she’d have to retessilate her bookshelves.
One day, a medium-sized dragon materialised in the corner of her main living space, breathing fire and generally making excessive roaring sounds. This disturbed the young princess immensely, because the noise made it very hard for her to hear and enjoy the YouTube video she was watching, and she was very conscious that she had no idea how to get smoke odours out of delicate fabrics and she would sooner move castle than change sofa. She loved that sofa. It was a really very comfortable sofa.
She called out for her boyfriend (who technically wasn’t a Prince, but that was tolerable because he had most of his own hair and knew how to make really good scrambled eggs on toast) to come through from the other room. The boyfriend mindlessly grumbled and mumbled a few comments about how he wasn’t on the internet so any problems with WiFi speed had nothing to do with him, but when that didn’t stop the calls for assistance he plodded through to see what Princess Amanda wanted and immediately saw the dragon.
“You got a dragon,” he said.
“I didn’t get it,” said Princess Amanda. “You must have let it in.”
“Why would I do that?”
“You never lock the front door properly,” said the Princess, gesticulating in the general direction of the main portcullis.
The boyfriend frowned and looked at the dragon, who looked back at the boyfriend and hicced a delicate little burp of smoke and grinned a smile that managed to be both toothy and apologetic at the same time.
“Is there something you can do with it?” asked the Princess.
“Now?” asked the boyfriend.
“Well, yes,” said Princess Amanda.
“But I’m in the middle of a chapter,” said the boyfriend.
“It’s getting smoke on the sofa,” said the Princess. “And you’re always in the middle of a chapter because you take three months to write a damned chapter.”
The boyfriend frowned again.
“Do you speak English?” he asked the dragon.
“I do!” replied the dragon, in a Welsh accent so broad it practically dripped with daffodils.
“Are you lost?” asked Princess Amanda.
“I don’t think so,” said the dragon, who introduced himself as Rhys and explained he wasn’t lost, he just wasn’t where he was supposed to be.
The dragon smiled, waved and - with a final belch of smoke whose odour had the faintest hint of bergamot - disappeared as quickly as he’d arrived.
“Anything else?” asked the boyfriend.
“Yes, can you get off the internet? The WiFi speed is terrible.”
I have a feeling this is more of a “day in the life of the fender of pigs” than a fictional parody.
It’s got dragons, castles, princesses[,] and living areas with good mobile phone coverage and it feels autobiographical to you?
I’ll take that as a rare compliment. 
Kindly requesting a trigger warning for use of the word tessilate… Oh never mind. It’s too late.
But is it the sort of dragon one might not mind visiting now and then, in a casual sort of way, or the sort that always arrives at tea-time and makes critical comments regarding your taste in Welsh Cakes and upholstery?
If the compliments fits…
I guess I need to work harder at making the compliments clearer if they are perceived as rare.
You do compliments? 
apparently not… I try though… Just the other day I tried to compliment someone. “I’ve seen much worse outfits on corpses” was on that seemed to go unrecognized no matter how many times I repeated it.