When filing after 105 days, you were probably aware you are filing the COS application when not maintaining status and not eligible for the benefit.

You file for COS within the 60 days time frame and later if you find a job, an employer can petition for you.

Grace period is available only once for each authorized period of stay. If you used it and were not given an extension, it is not available to you.

There is no automatic bar or overstay issues for F-1 D/S. The Consulate officer will make that determination. If found to have overstayed and...

How do you know if the petition was approved without the receipt or approval notice? Are you going with what that employer informed you?

Getting paid or not is not the criteria for unauthorized employment. There are other factors USCIS considers.

You can if the current one is pending however the next one will not be approved unless the bridging one is approved

Either a motion or another AOS may be an option. One would have to review the denial to opine and consider if employment and travel are other...

Without first understanding your visa profile it is not possible to opine on what can be done to prepare a strong visa application.

EB petitions are initial steps to GC whereas work visas are for short term employment. Derivative beneficiaries of certain visas are permitted to...