OPT

I came to the US in Aug 2015. Completed masters in 2017. Started OPT on 07/2017. When applying for OPT EAD I joined employer AZTech Technologies. I joined as an intern and was there for like 4 months. He responded for 2 months during training, after a couple of months employer did not respond at all. I got a doubt and found another job and moved to a different company. Later I got an H1B and I 140 approved. I am planning to go to India this August 2023. Recently I found out through social media that the company I joined in the initial stage of OPT EAD was a black listed company. Most people who joined those similar companies' visas got rejected when they went for stamping. I am going for H1B stamping. Will there be a problem in my case? Could you please advise me in this case? In an emergency situation, I need to go to India. I heard from some friends and social media groups out of my research that I can go get stamping done in other countries and then travel to India and can be back to the US. 

Hello Rajiv Sir, My wife wants to do Masters and she is currently on H4 without EAD as I am awaiting PWD approval and other steps in the process.
 

My question is can she transfer from H4 to Day-1 CPT through F-1 by filing I-539? Also, If we do only 363 days of day-1 CpT, can she get opt and stem opt?