Re: Please confirm whether the issue is still being encountered or not anymore
I agree that you confirm that something is happening or confirm that it's not happening, or you determine whether or not something is still happening.
Confirm that this is still happening.
Confirm that this is no longer happening.
Let us know whether or not it's still happening.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.