Hi, my name's Gabriel, I'm new on this forum, I joined because I've been having troubles with TinyWall and I'm looking for help, it's a pleasure too meet you all.
I see you have already opened a thread about your issue with TinyWall, I think Avast can be conflicting since they added a firewall to their free version.
I already checked the rules, but it won't hurt to read them more closely.
And @geminis3, you may be onto something, because today I tried to disable Avast and enabling it again and that semed to do the trick, sadly the problem came back after rebooting...