I’ve been using Collabora CODE since I started with Nextcloud. I chose it initially because ironically it was said to have better mobile device support. I tried to use ONLYOFFICE a couple times but could never get their doc server to work. The reason for me wanting to try OO is Collabora is sorely lacking features compared to LibreOffice. I had quite a bit of trouble with Collabora too at first but eventually got it figured out.
I’ve been looking forward to the built in OO doc server in NC18 but have held at NC17 mainly due to concerns over the gallery app. But honestly, if OO is going to axe mobile device support on my 2 user home instance, they can keep it. We use that feature, and I won’t give it up.
I feel bad for the Nextcloud developers to be thrown under the bus by ONLYOFFICE like this after investing a year into the integration. It’s hard to believe the timing is a coincidence. Only thing I can say is spend the next year on Collabora instead, and by the end of it we’ll be in a good place.