Preferred Payment Method isn’t being used

Description

Hey All,
I have a credit card and debit card linked to my account. My credit card has always been my preferred payment method. My debit card is only on there because they make you.
Anyways, the original credit card was cancelled due to fraudulant chargers (not paypal related). So i logged in, deleted the card, and added the new credit card and marked it as preferred payment method. Sounds like i should be all set to make purchases through paypal expecting it to take the money from my credit card not my debit card, right? Well, this isn’t happening. I use a Mapco Gas App that is linked to my paypal account to make gas purchases. (It saves $0.05 off a gallon, lol) Well, I have used my Mapco app twice sense updating my new card/preferred payment method and it keeps taking the money from my debit card. Unfortunately I dont ever use my debit card so i keep a very low balance. Thus, when I used this app 2 times it caused an overdraft in my checking account each time, costing me $25. I attempted to reach out to Paypal regarding this. I had to make a ticket, not knowing which drop down selection to choose i just picked one and then explained my problem in the notes. Well, i just got an email from paypal saying claim denied! No, explanation, no tips to keep this from happening again, nothing. Not sure what else to do. Has anyone had this happen to them before?