@vlad I am having the same issue. Where did you change keepalive timeout to a long time?
Essentially, what file did you edit, what parameter and to how long?
@Yveaux I have 34 of 80k RAM used for this sketch, so 128 bytes looks like "a bit more".
You can not use progmem with ESP and mysensors now because PSTR redefined as PSTR(x) (x) so all strings are really in RAM
