Unable to connect to world since new update

hello, 

ever since the new 1.16.0 update, multiple players including me has had a problem with joining friends or added servers. 

when I tap on a friends LAN game or world there is automatically a screen saying "unable to connect to world"

I have tried everything. 

keep in mind this hasn't happened before at all before I updated to 1.16.0. 

ever since I updated this has happened.