I have an HS200 switch controlling an outdoor pole lamp. Switch has been in use for ~2 years.  Because it's an outdoor device, I wanted it ground fault protected.  I switched power sources from a non GFCI circuit to one that was GFCI protected.  The GFCI breaker tripped immediately. I double checked all wiring to ensure it was correct and I found no issues.  I switched power sources back to a non GFCI circuit and the switch worked as it did previously.  I called TP link support and they provided no help. 
 

Has anyone else experienced this type of issue before?  If so, is there a solution or are TPLink switches incompatible with GFCI breakers?  
 

Thank you