Google play services stopped working

Hey guys

For some days now I get a "google play services has stopped working" message every minute or so. As you can guess this is pretty annoying.

I googled it and I read somewhere to uninstal google play services. Or just the update. Amyway, I need to disable Google device maanger for it, but i can't do it. I get in to the menu but I can not press the disable button.

Does anyone of you have a solution for one of these problems. Would be great.