Firefox has blocked walmart.com on my computer how to I get it back

I went to log in to Walmart.com and I couldn't get past the captcha it just kept coming back and saying I was blocked. I finally turned off all protections. where do I set save sites. Oddly enough, I went to a different browser (edge) and was able to log in. That is very frustrating. How do I fix this iif it happens again.