Do you have any third-party security software installed on your computer? For errors like this, it's likely related to a program tampering with your operating system's certificates. If you can temporarily disable these you may be able to understand what's causing the issue.
One other check you can make, ensure that your computers clock is correct. An incorrect clock can make some certificates think they're expired even when they aren't.
Almost like that same thing also happens with me, when I write a password for my google from my PC, I can't Open my google account from android when also I write the changed password. Also when I change my google account password, I can't open it on my PC writing the changed password.
Same! https://api.itch.io/profile shows the correct input, but for some reason the app isn't working... No proxy, no blocker and the time and date are set up correctly. Also, I'm in 10.11.6.
