I had 40k on my gosats card. Rejected on titan+, many jewellers, gift shops... Like whole week for my engagement shopping and no where it worked... I felt very frustrated as every time they put the card it's rejected.. even though I had better rewarding cc's I wanted to get rid of the balance on my gosats card. I don't know if gosats having issues with POS or merchants itself blocking prepaid cards(Not sure of this as I don't think every merchant will block prepaid card).