Sites that I add to a Collection do not go to the proper site when I click on one.

I set up a Collection to which I added several news websites. However, when I click on one of the websites, it takes me to the wrong site. Example: I have 5 sites saved: A, B, C, D. and E. When I click on A, it takes me to B. I have deleted the Collection several times and tried adding the same websites back into a new collection, but the same thing happens again. The same problem occurs to another Collection set up for some other websites. Thanks for any assistance!