Well, nothing is working, I guess I will give up. Is there a way to check my wallet balance somewhere else?
Don't give up early!
I too have been struggling with a similar problem for a long time.
This is what helped me in the end:
1) Complete deletion of the entire blockchain base in BITCOINCORE
2) Re-downloading that base again (yes, all 500+ Gb re-downloaded).
3) Complete deletion of the Armory base
4) Starting Armory and waiting for all the processes of building the base from scratch to complete.
In the end - Armory works finally. Uff.