Just for future reference:
Create print debug function like this one (in blueprint function library):
Or even make that print debug Var global that is stored in game instance, so you can turn off all debug. Extra bonus: if you name this function as My_Awsum_Debug you can easily find all of them with search, because it has unique name.
Personally i made print to UE_Log in C++ and few more variables like category or verbosity level. But that turns my project into C++ one (need to stop being lazy and create tiny plugin for it).
ps.
There is great FREE plugin in fab: LogViewer, better version of output log. Also instead of printing to screen you should use log output window, because screen flips order of printed text upside down.