spelling and dictionary

I’m not sure if its a bug or I just can’t see it, but I’m unable to add words to the dictionary for future reference in Scrivener for Windows, also the auto correct I had to turn it off because it wouldn’t let me add a y to the end of a name it kept recorrecting me every time. Again not sure if it is a bug or just me lol any help would be greatly appreaciated.

Thanks
Shel