State Bank Of India [SBI] — I can't Pay online it shows following error-POS declined as the account is inoperative or locked. Please contact your branch for resolution.

Address:

754004

I am using sbi debit card for online transaction regularly.
When today I am used card but transaction failed.
SBI message me= Dear customer, your txn at POS declined as the account is inoperative or locked. Please contact your branch for resolution.

I am active on sbi. also using regularly.
Please check and solve problem. I want to use my card.

Also I check https://cms.onlinesbi.com/CMS/ but can't open site.