The surface is a problem. Concrete is just about the worst thing you can run on. The impact on your joints is far greater than for any other surface. Is your jumping also on concrete? Wow that's a lot of impact.
As your ankle is already injured you need to rest it to allow it to recover. If it were me, I would seek medical advice or maybe go see a physio. I would like to know what the injury is, how it was caused, how to treat it and how to prevent it from happening again.
The power walking is good, can you do that without your ankles hurting? Can you do your 1.5m as a power walk until your ankles have recovered, then slowly reintroduce the running?
I think I would be looking at introducing a wider variety of exercise into my daily routine in the first instance to tone and strengthen muscles before getting down to any serious running.