Entering credit card info

Could not enter cc info from my phone. Would put date over top of info. Went on desktop and no problem??? It would space out card number then would enter security pin over top of date and say date was not entered properly.

Depending on what phone you are using and what browser you are using that could happen.
We would need exactly the phone make and model, which Op system version along with the exact version of whichever browser you are using.
If it works on the desktop that is great.