I think Matrix suffers from some issues with large communities, for instance Graphene OS has already had to abandon 2-3 of their main group chats due to same bug and last time I checked (2-3 months ago) there has even been talks of switching to Discord. That is, just in case, a community of some of the most diehard privacy nerds btw

My copied answer to other user in this thread:

I’m in US. My ISP Xfinity provides their own router and has decided their users are too stupid to use router settings so they purged port forwarding settings from the router firmware altogether. Now you have to use their mobile application which doesn’t allow you to make port forwarding rules for a specific IP (because again, they think their user is an idiot that can’t figure out IP numbers), instead it just gives you a list of devices and you have to select one to create a port forwarding rule. Wired devices are not on that list.

I’m in US. My ISP Xfinity decided their users are too stupid to use router settings so they purged port forwarding settings from the router panel altogether. Now you have to use their mobile application which doesn’t allow you to make port forwarding rules for a specific IP (because again, they think their user is an idiot that can’t figure out IP numbers), instead it just gives you a list of devices and you have to select one to create a port forwarding rule. Wired devices are not on that list.