Doesn't prefill on coupa

Should I just be posting here with every site that 1Password is not compatible with?

Edge browser extension

https://supplier.coupahost.com/sessions/new

1Password does not recognize that my e-mail address needs to go in the  e-mail field.  A key pops up in the e-mail field like it thinks it recognizes that, but there are no options to prefill.  Once I manually enter my e-mail address and get a second page/prompt with e-mail address and password, 1Password works fine.