Are you sure the 2021 contribution isn't for tax year 2020? Form 5498 should show the tax year for each.

You have taxable earnings and excise tax for leaving the money over year(s).

Your removal deadline isn't year end; it's based on the filing due date of the tax return, including extensions. Because there have been so many extended due dates, I would recommend simply using google:

how to correct ineligible roth ira contributions

A lot of great articles exist directed to the consumer, as well as from the IRS, for steps to take.