Strange output, but why and how to solve it

ageurtse:
But why it didn't run in the first time i don't know.
for now i'm happy that my sketch is up and running.

I would still recommend cutting down on the RAM usage. You are using about 75% of available RAM, and that only leaves 25% for local variables and such. You have a LOT of string constants that could be put into F() macros.