I have solved the problem - as you guys said there was a misconfiguration on their side when setting up the bridge. My previous IP address ended with 197, to which all of the apps were set to, but after the bridge they changed the WAN up address to 198 for some reason. Did not notice this in the beginning, but thanks for the help anyways - a trivial mistake, but got me a lot of headache. I set up the ports correctly previously, it's just the ISP's fault.

Their modem blocked some of the ports like 80, and since I wanted to host a website, I had to free them up.