Latest version 19.0 is requiring my AppleID password before opening. Why?
Just updated. Now requires password and will not open without it.
Additional System Details
- User Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1.2 Mobile/15E148 Safari/604.1
Oh well good by firefox app
Your question is related to Apple's AppStore. It looks like your Appstore session has expired. Are you logged into your iCloud account in the AppStore? This should not be a big issue. Simply re-enter your Apple ID.