The root folder error for collections. I think I know this one. You need to go into every movie and update the filepath to the use the new root folder. Radarr isn’t smart enough to do that automatically for you. Though you’d think they’d have $rootfolder as a var, but no.
Might need more info about your setup. The reverse proxy probably has some logs you aren’t looking at. Most bots from what I’ve seen do ip:port scans hitting every ip and every port. Nginx reverse proxy manager or something similar isn’t going to forward ip:8123 to home assistant. A straight router port forward will, but the reverse proxy manager will look at the domain GET request for https://ha.hit_the_rails.net to your LAN ip:port. It’s a little security through obscurity as they have to know your sub+domain.
For a time I had port 22 open and forwarded directly to a server. Constant bot traffic. Changed the port, put an ssh honeypot on 22, and it almost completely went away. Sure the bots could be smart enough to scan and find another open ssh port, but they rarely did. I assume because anyone savvy enough to change the ssh port is savvy enough to not allow default logins like ubnt:ubnt and root:1234 which were by far the most common logins I got in the honeypot.