In the screenshot above gmail is spelled incorrectly, assuming that the intent is gmail and not gmal. Correct the email address and I believe Quinn should be able to access the toolchain.
The problem with 813600 is that there is nobody registered on the FIRST dashboard with that email. Note the first sentence here: Granting Students/Team Members Access and the advisory therein to “Use the email that the student used to register with FIRST”.
Go here: Register to register with FIRST.