Help with Sending SAT Subject Tests

Maybe this has already been discussed but I can't seem to access the website needed to send my SAT Subject tests. Whenever I click on the link to add any new colleges I am just sent to a blank page. I've looked all over and I can't seem to find anyone even asking this same question. Sometimes I'll stumble onto a website that says "We are down for maintenance." I am sending two subject tests (Math 2 and Molecular Biology) to some ED, EA, and RD school and just needed some help.

Any tips appreciated. I know I'm not good at planning my time, but I am trying to get better.

Thank you for any tips or help.