I think that those who has experienced the issue just figure out how to fix it themselves rather than replace the part with the same part that will break again.
There are a couple of threads on the subject. I got mine off amazon for @$20. Has been working flawlessly for over a year now. Stays put on the windshield even in the hottest weather.
The ac compressor will cycle based on humidity conditions in the cabin. It is automatic and can’t be changed. Try disconnecting the battery for a bit to reset all the actuators.