Engine 4.20 and 4.21 can't install

I hope this is the proper section but I didn’t see anything for the launcher itself. I’m having the issue that even after uninstalling and reinstalling the launcher, it will have 2 buttons for the newest version of the launcher to install that I cannot remove. I try to install version 4.20 and 4.21 and they are not available as options. On my PC at home everything is good but this happened a few months ago on my laptop and I can’t get the engine versions that I want installed. Specs are good and all but this is befuddling me. I appreciate any thoughts.