Why are my credit cards declining on my website?

[LLShortbred]

[The title of this thread has been edited from the original: Credit cards are declining on my website]

Several people have told me their credit cards are decking on my site. AMEX and MasterCard were used. 

also, I need to fix my username to LLShortbread and not LLShortbred. 

[Alex_]

Hello @LLShortbred,

Thank you for posting in the Seller Community.

I'd be happy to help look into this for you. When did this start occuring, and what website builder did you use to create your site?

Please let me know by replying in this thread. I'll keep an eye out for your response.