Cannot log into my bank acct

can not log into my bank, keep getting . avast shows threat name url:blacklist, my bank keeps telling me i need to use edge instead of firefox, edge did not work then they say use chrome well that did not work,

First, I’m an Avast user and not an Avast Team member.

Firefox is my default browser and I rather doubt your banks advice to use the Edge browser would make any difference, as the Avast Web Guard (Shield) should still be protecting that.

A Screenshot of the Avast Alert window might help us to help you, as trying to post a url that Avast is alerting on (isn’t wise) and as a new forum member may well be blocked.
Drag & Drop - Create a screenshot on your computer and save it locally. Using windows explorer or other file management program, drag and drop into your post.

Given you have posted in the General sub-forum, it gives no clue what Avast Product/s that you are using, this again helps us to help you.