Roth IRA contribution exceed with lower AGI?

I contributed $7000 to my Roth IRA for yr 2020 with single filling over age 50.  

Since I contributed 90% of my income into my 401k and 457 retirement account this year, when I filling return online the system warned me that my adjusted gross income is lower than 7000, I need to withdraw the exceed amount out of my Roth IRA account.

I called my URS retirement, they told me I did not exceed the maximum requirement of $7000, so I do not need to withdraw....suggest me to talk with a real person instead of following the system warning...

Never meet this issue before and people also hardly to see my situation: lower AGI with full contribution of Roth IRA,  It would be highly appreciated if can help me figure this out.