android cell phone won't fill fields that windows pc does fill

I'm trying to send an email to Senator Merkley. His office has a web form to fill out that includes the common identity fields -- name, address, phone, email -- plus some unique ones. On my android phone, phone and email do not populate using my 1password profile (name and address populate properly), but when I go to my windows pc, all the identity fields populate.

If I could create a login for Sen. Merkley (or whoever) to use on the cell phone, that would be acceptable, but I can't figure out how to do that.