I Can't Use Photon with RethinkDNS

https://lemmy.dbzer0.com/post/66595061

Check network logs first. What do you see?
It seems like nothing is being blocked.

One or more of the URLs on that page is being blocked. You need to figure out which; that should be in the log on the dns tunnel service.

This kind of error happens somewhat frequently, so you’ll get comfortable with it quickly!

I didn’t see any blocked pages in the log.
This looks like a problem when it tries contacting the Lemmy instance. Is there any rule in Rethink DNS that is somehow preventing API calls to lemmy.dbzer0.com?
No, there isn’t.
In the main menu > accounts, try adding a guest account for some other instance like lemmy.zip. does that server work?