Hi! Seems that I have the same problem on my end. Have you found a solution?
Please let me know.
Once Raspberry PI GPIO Driver switched to "enabled", relay turns on and is never going to switch off (physically) even trying to turn it off by added node. It may be turned off only by changing direction from Output to Input...
RPi 2, Mobel B v1.1, chosen version A+, B+, tested on PIN 7 (GPIO04) and PIN 33 (GPIO13), easyiot_v0_9
//edit 12 hours later
downloaded also fresh version of easyiot_v0_9, unzipped and replaced currently used RPiGPIODriver.dll with new one but it did not helped.
//edit 20 hours later - SOLUTION
by using multimeter I realized that RPi GPIO Vout is NOT 5V, as I initially assumed, but around 3.5V, so controlling a 5V relay "may be difficult".