On OPT - STEM OPT applied - Delayed - New job offer

Hello All,
I have a situation. I am now on F1-OPT and it expires on Feb 3rd 2021. I submitted my STEM OPT extension application, its delivered, on December 15th 2020. I received neither E-notification nor receipt notice. I have a job offer with joining date on Feb 8th. What can I do now? Please suggest.