Clean and sober people don't phone people at 1 am, to me that is a big red flag. And the fact that his actions don't match his words is another. Arranging to call and meeting you and then nothing...these are not the actions of sobriety.
You are wise to keep a safe distance, I doubt very much that there is anything good in all this for you.
Just my honest thoughts, hope I don't sound too blunt.
Hugs