SUMMARY There is no way to log into google account, either from gmail or youtube for exemple. The message from google site is that the browser is not compatible or insecured. STEPS TO REPRODUCE 1. Try to connect to a Google account, from example from youtube or gmail. 2. Enter your email address. 3. Instead of being asked for your password, you get a message that your browser is incompatible or insecured. You're invited to try with another browser. OBSERVED RESULT NO way to login. EXPECTED RESULT Password enter and connection. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Kubuntu 20.04 (available in About System) KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68 Qt Version: 5.12.8 ADDITIONAL INFORMATION
Try to change the user agent to some new Firefox or Chrome. This thing is forced by the services you mentioned, please fire a bugreport there.
Does this mean you'll never support GMail use at all in Falkon?
Actually, you'll have to do this in general, because the default user agent causes issues with many sites. The simplest thing to do is to get the user agent Firefox uses, and use it for Falkon. The user agents prposed in the Falkon menu seem obsolete.
The user agent that works for me is: Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/82.0
*** Bug 426779 has been marked as a duplicate of this bug. ***
*** Bug 432272 has been marked as a duplicate of this bug. ***
Same issue, but for me it's due to default JavaScript settings. Check if your bug is the same: https://bugs.kde.org/show_bug.cgi?id=434238