My bank uses a protection module called "Warsaw" from Diebold-Nixdorf. Because of the problems I've had, I uninstalled Avast Ultimate (all programs), and did a windows restore to the restore point before all these problems started. Then I installed the bank security module and got into my account. After that I re-installed Avast premium security and things seemed to work, as I was still able to access my bank account.
Just to make sure I re-started my computer and everything rebooted correctly, including Avast. Then I tried to get to my bank account and the problem came back! The bank website says that I don't have their protection module installed! Re-running their installation program finishes correctly, but does not solve the problem. I keep getting the same issue that the protection module is not installed.