GlobalProtect indicates "Connection failed".

Open the window by clicking on the "Three Lines" and then on "Settings".

Make sure that "User" is correct. If you make a mistake, "sign out".
Make sure the Portal server name is correct. "Edit" or "Delete" if wrong and enter the correct server name.

Click Connect again.

username：ScombID（except "@sic"）
password：same in Scomb

【The other solutions】
・Cannot enter S*gsot because cannot connect to GlobalPlotect
・I tried to connect to GlobalProtect, but instead of "Connected", "Connecting" and "Continuing" continue to appear (Mac OS)