I tried to link my RHB Credit Card to Boost App. However, I keep receiving this message. Initially I thought is RHB's issue but I tried on another RHB Credit Card, it seems ok. I tried on my friend's Boost App and received the same message, can't be linked.

I used the same RHB Credit Card to reload TNG, everything went smooth.

Wondering if that card has been blocked by Boost to be linked to the App?