3.50.0 fails where 3.15.02 works

[rjasdf]

I got a new machine; installed the latest Filezilla (3.50.0). Now I can't make the new version connect to my web site.

Meanwhile, my old machine's Filezilla (3.15.02) still connects without a problem.

Both machines are simultaneously going through Wifi to the same Xfinity router, so I can't believe that it is part of the problem.

Things tried:
* Wizard -- I tried a few times with random failures.
* Obvious connections, that I thought should work. Result below
* Copied configuration from old machine. No better. Same result, below.

Status: Resolving address of rjweb.org
Status: Connecting to 67.xxx.xxx.25:21...
Error: Connection timed out after 20 seconds of inactivity
Error: Could not connect to server
Status: Disconnected from server

What has changed? Is there some new setting that is getting in the way? Etc.

[boco]

Neither of your FileZilla versions is up to date. The current, only supported version is 3.52.2, and, very soon, 3.53.0.

Please try with the latest version.