It would be also nice if they could hold their implicit promise of having the AdGuard extension working on Safari iOS, it's broken for me even when I reinstal it. Anyone else have the same problem?

This is not a common issue tbh. What sometimes may happen is that after an iOS update the content blockers in Safari becomes corrupted and the only thing that fixes it is not just a reinstall, but uninstall + reboot + reinstall after that. If even this doesn’t help please contact me at “am at adguard.com”, I will try to help.