I use it, and it works fine. OpenOffice had a massive following before the LibreOffice fork so realistically most people moved there as a default option. Doesn’t mean Only office is bad, just that many FOSS users are more likely to use its competitors.

mine is a pi 4 but basically the same, just shoved inside a box for protection

It’s a VPN thing. I have a work VPN that gives me the same error on piped API front ends like piped.video

If I use my regular device without a VPN the alt front ends work fine.