Samsung checkout declining my cards when buying from Galaxy Store

[Rownana]

I was going to buy a theme on the Galaxy Store when samsung checkout kept declining my cards. I used Mastercard and Visa as well as my paypal and all of them won't work despite no limitation from card issuers. I was able to pay with samsung checkout before with genshin but next transaction involving galaxy store did not work. I tried deleting cache and storage of galaxy themes, store and checkout as well as restarting my device but nothing works. 

Has anyone experienced this before? What is a possible solution for this? 

[Obviou_sly]

Did you check the Bank? If you did that, then you can try after some time due to network signals.

[Rownana]

I did and they're all working fine. I have been trying for the past 3 days still ending up the same way.

[EllisKai]

Is there an error message or code for that?

[Rownana]

yes, this shows up.

[EllisKai]

Is it the first time this happened? Were you able to make a purchase following the same procedures before?

[Rownana]

Yes I followed the same thing I did before :( I was able to purchase like 4 days ago but now it won't work.

[EllisKai]

Okay I can't believe I did it again. I bought something I wouldn't use just for this.

The process was successful on my end.

[EllisKai]

Some of my apps are in deep sleep

[EllisKai]

Try going to android recovery mode, then clear cache partition, then repair apps.
Let it reboot and try the purchase again.
And be sure Internet connection is stable when purchasing.

I can't think of anything else right now so update me.