I've spent a year with Teamlab / Onlyoffice personal. Unfortunately, it's time quit.
I can deal with exteremely poor quality of service, when Onlyoffice is very often down, or it's impossible to login, or doesn't work integration with Google Account, or OnlyOffice editor cannot load.
Onlyoffice suffers from numerous stability issues. Support is unable to provide help, the answer is only one - clean cache of your browser.
But it's ok for free service.
But definitely not ok to lose data. I discovered early that I lose most of my March changes made through Onlyoffice in connected Google account.
Onlyoffice reports that file is succesfully saved, but apparently somehow these changes did not reach Google Drive.
Ok, I thought may be my fault. I tried twice with same file and result is the same - Onlyoffice editor shows that file is succesfully saved, but no changes in file on Google drive. When I open it again in Onlyoffice my changes are missing.
I think that's enough. Thank you and wishing you good luck.