When using the search filter (I was using my phone} if you have an item selected then go back and try to add another option, the filter window closes. You can't add multiple filters! You have to delete the filter you are using then go back and try a different filter.
I wasn't able to buy the parts I was looking for! The payment process was such a headache I decided not to buy the $10 parts to fix my $40 cooler, I went straight online and bought a whole new cooler! When entering an address, every time you type a digit the web page freezes and tries to search and guess the address you're trying to type! I initially tried using my saved address in my phone to make a quick autofill but that still didn't work, it kept giving me a bunch of random addresses to select from. I also put my phone on airplane mode so it wouldn't search for addresses but that just left it hanging & waiting for a web connection. I tried that for a few minutes then ultimately decided just to buy a whole new cooler.