Question on Re-entry to US after B2 extension filed during Covid

[Disco12345]

Hello, hoping some response on this.

• My in-laws came to US on October 17, 2019
• Their official stay as per I-94 was untill April 16th, 2020.
• Due to Covid we filed extension for 6 months on April 8th, 2020.
• They left US on October 31st, 2020
• They receive Biometrics appointment letter on Feb 13th, 2021
• We got decision on Feb 24th, 2021 - I539 - that application is denied as they couldn't attend Biometrics and Interview as they left before the appointment date.

My question is

• They want to visit US again, will there be any Ban applicable for 3 yrs or 10 years as they overstayed for 195 days more (from April 16th, 2020 to October 31st, 2020)?
• Is it considered unlawful presence ?
• Is there a way to verify online if Ban is applicable or not?

Appreciate your prompt response.

Thanks you.