Submitted I-130 & I-485 concurrently.Interview was 26th Jan 16.Got approved. Card not received, website saying that delivered

This has been a nation-wide issued. Schedule an INFOPASS and if necessary file an I90. Contact a US immigration attorney for further review.

I agree with my colleagues. Contact a US immigration attorney prior to filing. Generally, traffic offenses like this will not cause a denial.

After I file my I 771 can I travel outside of the country and is their a high possibility of having to attend an interview.

I agree with my colleague. You may travel with valid passport, expired card, and I751 receipt. Contact a US immigration attorney for further...

O-1 to Green Card ?

Yes. Contact a US immigration attorney for review and filing assistance.

What is the best and QUICKEST way to go about getting my fiance here as a legal resident?

I agree with my colleagues. Contact a US immigration attorney before he travels to the US to review all options and all risks.

Do I have any restrictions to live abroad? and do I have any waiting time to live abroad as a naturalized citizen?

US citizens may live outside the US anytime, anywhere. Contact the country's Embassy to see what their immigration requirements are.

Does approved I130 and pending I485 have any negative impact on the I140 that my employer is going to file for me?

I agree with my colleagues. Both petitions can be pending and don't impact the other. Contact your company's US immigration attorney for assistance.

Can we provide estimated Date of birth to USCIS if birth is not registered at the time of birth?

I agree with my colleague. Contact a US immigration attorney for assistance with reviewing country document reciprocity to ensure correct dates...

Can I retain PD even if current employers revokes I140 ? Should I wait until new rule comes in place?

I agree with my colleague. Contact your company's US immigration attorney for assistance.

Can i fix my mothers papers ?

I agree with my colleagues. If you are US citizen over 21 you may file for your mother. Contact a US immigration attorney for assistance.