Diễn đàn hỗ trợ Firefox

For several days, I've been locked out of a banking website I use regularly (Fidelity) using Firefox on two different computers. However, I can access the site using Safari. I'm using an iMac 24 and a Macbook Pro. I've cleared the cache, have turned off the ad blocker for the site, and have an up to date version of Firefox. Thanks in advance for help.

Several websites (not sure it's website-related) are displaying some (or a lot) of unreadable text. If I copy the text and then paste it into a page in a text program, it all reads fine. What could be causing this, and how do I fix it? (Screen shot is attached.)

I am not ultra-technical so please make response clear.

Web page for attached image: https://www.forestrydistributing.com/razor-pro-herbicide-nufarm