I compiled and loaded the Weatherboard Plus (V35) (with blynk 0.5.4) with the display, solar board and lightning detector attached. I configured wifi, weather underground and blynk and it continually reboots and crashes. I redid the config one part at a time and the blynk config was causing a core 'panic'. I enabled DEBUGBLYNK and it seems to process blynk but fails in yield from a watchdog timeout. The messages that show seem to depend on timing factors. 'WDT reboot' appeared once.
I have attached part of the monitor text before DEBUGBLYNK was defined.
Blynk worked on the original image in the purchased board even after update to V35.