The company's immigration attorney should be able to work this out ... as long as everything is identical except for the title.

It is faster/easier to do this outside of the US at the US Consulate.

Can my EAD/AP be renewed if I am not present in US?

It will be VERY DIFFICULT to change your AOS case to a DOS case. Talk to your employer's immigration attorney.

You need to be more specific about your 'criminal acts'. Also, you can go to www.ailalawyer.com to search for an attorney licensed in Canada.

While I am waiting for the STEM replacement Card, Withthe let.Can I continue to work? Does it affect H1B processing.

You should be OK, as long as you follow the requirements set forth here: https://www.uscis.gov/i-9-central/744-f-1-stem-opt-extension Talk to...

Is it ok if I travel to Puerto Rico even though my passport and permanent residency card expired?

Yes, you should be OK, if it is a REALID compliant DL.

What is the process of filing i130 and i485 concurrently?

The tend to do concurrent interviews when applications/petitions are filed concurrently.

Sponsored EB3 now work in completely different profession?

Did you work as a nanny after getting the greencard? If so, for how long? If not, I see problems if you ever try to become a US citizen.

There is no 'usual timeframe'. Every case is different. Sometimes extra background checks are necessary, what's your current...

I have an expired green card for almost 5 months? And i wanted to apply for us citizenship

Yes, you should file form I-90 and THEN form N-400.