Which external servers does Cryptomator connect to, and why?

I was just installing Cryptomator 1.7.2 and noticed before its first windows launches, it tries to phone home to a server within *.scw.cloud

This is a security product. Please explain why this product does connect to some other service.

Cryptomator does only 1 external call, and that is a look for updates. You can disable it in your settings.

see here for details: