Living on a boat which has internet access but limited access to cell service, I'm finding 2FA to be seriously inconvenient. I can't get into one of my bank acc

Living on a boat which has internet access but limited access to cell service, I'm finding 2FA to be seriously inconvenient. I can't get into one of my bank accounts most of the time, because they don't believe I'm me, despite using the same computer as ever, and require me to enter a code they've sent to my phone, which I can't provide because my phone has no service. Grr.