Why does my online store show 'We will be back soon' after adding credit card info?

as soon as i buy the plan, as i add my credit card info, my store suddenly can not be access and the page is now showing the We will be back soon.

my store was also gone from the associated store of my email! anyone one here had the same issue before? have you regain your access? what is the solution for this kind of problem?

thank you very much.

Im having the same issue, did your get fixed?

Our store having same issue. Can somebody help?