On camper.com, when completing credit card info, all is added except the expiry month.
1Password Version: 7.7.1 BETA7Extension Version: 18.104.22.168 (Firefox)OS Version: macOS X 10.15.7Sync Type: Not Provided
Thank you very much for bringing this to our attention. I went to camper.com and got to the payment form and was able to confirm that we're not properly filling the month part of the expiration date. I've filed an issue so we can get it fixed in the future .
Please don't hesitate to let us know if you run into any other filling issues!