Currently on Firefox 104.0.1, but I updated it trying to fix this problem. I had 98 or something before. When I am on any merchant site and I choose their pay by PayPal button, a PayPal pop-up window opens, saying I am recognized on this computer, but then it never finishes loading to the payment options. Actually, I see the options there, but they are greyed out and very blurry, so I cannot make them out and select any of them does not work either. I have deleted cookies multiple times; ensured paypal.com is allowed pop-ups as well as the merchant websites. I upgraded Firefox. I only have one add-on listed, Amazon Assistant, and I had this problem before I installed it. I have tried every solution I can find on line, although all postings are at least a year old or older, but nothing has worked. I use to be able to get it to finish loading if I closed the pop-up and reopened it and refreshed the merchant page, but that is no longer working. It worked on Edge. I hate Edge. Firefox, please help fix this!