ProWritingAid - slow?

Does anybody else find Pro Writing Aid (Desktop App) excruciatingly slow at times? Often I click on a report and it just spins away for minutes on end. It’s doing it right now, and I’ve typed this whole post and still waiting!

It isn’t my internet connection - I have 330Mbps. It isn’t the document size - it’s the same whether the document has 300 words or 3,000.

I’ve googled, and nobody else seems to mention it. It can’t be just me?