I no longer get both my husbands and my own numbers to come up before logging in. Sometimes I use my husbands card and need to check a due date.
It sounds like you need to enter the barcode and pin number again, and click on the box next to "Remember me on this device" as in the image below:
This should then keep the barcode number filled in. I hope this helps!
If you would like me to check a due date for you, please let me know, or call any OPL branch and we would be happy to assist you.