The Sims 4 Gallery issue.

PlumberBobYT​  If you still need help, please disable your antivirus, temporarily, and see whether you can access the Gallery.  As long as you don't do anything else at the same time, your computer should be safe, and you can reenable the antivirus when you're done testing.  If this helps, set an exception in the AV for EADesktop.exe, as well as for TS4_x64 and TS4_DX9_x64, or the entire Bin folder they're in.

If this doesn't help, can you test a different internet connection?  For example, if your computer has wifi, you could set your phone as a mobile hotspot, using data rather than your home network, and connect to that.  Simply opening the EA App and the Gallery shouldn't use too much data.