Sorry for the delay, but let me explain in further detail my issue:
1. I am able to backup using a WedDav server (running in a container), as long as I use my internal IP in OnlyOffice, I mean, I have to enter 10.0.0.150:7000 and everything works;
2. If I use a dynamic DNS like “webdav.xxxx.com”, it does not work. I get access, but I can’t write anything to it, including the backup;
3. If I try the nextcloud option, which is essentialy a webdav access I believe, I get the error indicated in the image above (from the previous post);
4. I did PM the requested logs to you, @Alexandre ;
5. Everything is updated to the latest version:
Thanks,
Bruno Leon