Some things that may help with linking or editing your bank account for Managed Payments:
Go to https://www.ebay.com/sh/fin and click on edit your payout method. Click on the "+" Add payment option. Select the bank and click continue. Add the new bank, which will overwrite the old bank information.
Instead of selecting your bank from the pull down menu, scroll all the way to the end and click on "My bank is not on the list" to enter the information manually.
Make sure you are using your bank's preferred ACH routing number for online deposits, as it often is different than the one preceding your account number on your checks.
Make sure your name is exactly the same on your ebay account as it is on your the bank account. Change the ebay name if needed, you can change it back later.
If still a problem come back with the name of your bank, and whether it is a credit union.
