I had been having similar weather service call failures after I downgraded from 2.2.0 back to 2.1.7 with my hardware version 2.3 open sprinkler. I figured out what the problem was and wrote it up here.
https://opensprinkler.com/forums/topic/controller-lockups-crashes/page/7/#post-77396
I’ve been running the fix on my hardware version 2.3 without any problems for a month now. I don’t have access to any other hardware versions to test, but I suspect it has the same solution. So I have made my fix available with a number of builds for the various older hardware versions on my fork of the source on GitHub
https://github.com/darian-au/open-sprinkler-firmware/releases/tag/2.1.7(1)-weather
I would be interested to know if it helps with your problems.