If you have an EIN, then enter it. As for the 1099's, understand that if you are e-filing then the 1099's are not transmitted to the IRS at all. It's all included on line 1 of the SCH C (with line 6 possibly coming into play). The only time the IRS would receive a copy of the 1099 from you personally, would be if you elected to mail the return to the IRS. When you mail it, you're required to income a copy of all 1099's then.
Provided the SSN on the 1099 is the same SSN that the EIN is tied to, there's no real issue with that. However, I would highly suggest you stop giving out your SSN and that you require those currently using your SSN to issue you 1099's, to use your EIN from here on out, starting with the 2022 tax year. Simply send them an IRS Form W-9 with your EIN information only (leave the box for SSN blank) to all those who will be issuing you 1099's for the 2022 tax year. https://www.irs.gov/pub/irs-pdf/fw9.pdf
