Does AGI limit for deducible IRA contributions apply if I was not covered by a retirement plan in 2021?

I retired effective 12/31/2020.  As a retirement incentive, my employer continued to pay my salary through 2021.  But I was not covered by any benefits, including the ability to contribute to a retirement plan, during the year.  (None of the Box 13 items on my W-2 form is not checked.)  My wife also receives social security and is retired, so she is also not covered by a retirement plan during 2021.  I was advised by the company that has my 403b retirement account that since I was not covered by a retirement plan that I could contribute the max of $7,000 (we are both over 50) for each of us into a traditional IRA in 2021 to help with the tax burden for that year.  When TurboTax caught the fact that my AGI was over $125,000, it said my $7,000 IRA contribution would not be deductible.  (My wife's was.)  The help in TurboTax does seem to indicate that the AGI limit on contribution only applies if I am also covered by a retirement plan.  So, my question is whether I can deduct my $7,000 contribution due my not being covered by a retirement plan.