H1B extension after 6 Year and I-140 revoked

[vijayshree]

My GC processing was started in EB3 category and got I-140 approved 3 Years back and this year employer filed for H1B extension after 6 year (already completed 6 years on H1B). While filing my PERM, company lawyer did not give the advertisement but still my PERM and I-140 was approved. Now USCIS found that advertisement was not given. I don't know the consequences yet. I am still with same company. I have following questions:

1) What will be the impact on my PERM and I-140 because of failure to give advertisement?

2) Will this impact H1B extension?

3) If USCIS ask to restart GC processing can I file under EB2 category?

4) If filed in EB3 again will priority date remain same as before and can it be in premium processing?