Is agilecertifications.org still valid and active and offering certifications?

I don't know anything about them specifically, nor never heard of them, or seen their credentials anywhere. If you are going to spend the effort to get a certification to better yourself and your career, choose something that will add valuable impact, not just simply for getting a certification. If the certification is not recognized, there will not be much benefit.

On the flip side, striving to earn credentials in a preferred area show initiative and a level of professional development; and that certainly cannot hurt.