Hey, 

Having issues with my RV30 Plus max mopping path. Vaccum function works fine, have had the vaccum for a few months now and only just used the mop functions. In mopping mode it goes back and forth and turns around(see picture). 
I saw a thread with another user with the same issue post the same issue but the thread has been locked with no outcome. 
anyone shed any light? 

https://community.tp-link.com/en/home/forum/topic/720836