Let's restore the deleted 2553 Tax Account by going through your Chart of Accounts (COA), theolivetreehold.
The COA is where you can locate and activate all accounts that have been deactivated in QuickBooks Online (QBO). And, I'm glad to walk you through the steps:
Go to Accounting from the left menu, then Chart of Accounts.
Click the Gear icon⚙ at the top of the Action column.