Amazon seems to have restricted my seller account due to an outstanding unpaid balance. The balance was unpaid for 2 days due to a temporary short term cashflow shock meaning I had insufficient funds when Amazon tried to bill me, but i also had enough in deffered transactions to clear the unpaid balance in full if Amazon waited 2-3 more days and carried on deducting the unpaid balance from my deffered payments once they became unlocked as they've been doing for the past 2 days, but suddenly stopped and restricted my account. No matter how many times I verify my charge method, Amazon won't bill me for the unpaid balance despite my credit card being available for charges and sufficient funds available. I'm actively trying to settle the outstanding balance but can't find any ways to pay manually (Even the payments section where you can pay overdue balances shows the same restrictive view). All it does no matter where I click is say I have an invalid charge method and that I should Update it. I have done so numerous times, and the £1 temporary charge has succeeded multiple times yet no bill for the overdue balance, or change to the view of my account after updating the charge method multiple times. I kindly request Amazon's urgent assistance in resolving this matter promptly so that I can resume selling on Amazon as I'm a volume FBM seller and have preemptively plan each days dispatch. If this issue persists, theres potential for severe impact on my seller metrics. I can't manage inventory, cancel, buy shipping, or view any orders, manage PPC ads, or do anything on my account for that matter, but i keep getting emails and notifcations for items sold. Please help