In general, as long I have no doubts about my project or task it's doing correctly, so far not having any problems at this device management softwareI can say that is works perfectly! As everything related to digital things that we are getting a lot more complicated, for sure this product will be very helpful because you don't need to worry anymore if your thing work good or bad! There aren´t many disadvantages but honestly, there isn't one either! The service after some time goes slow sometimes and needs an update to continue working. So try to use if you want to make projects easily with a low cost without worries and also with low maintenance. With Rhea, I was able to add devices, configure protocols and test them quickly by using the graphical user interface. The most useful feature is that it can connect two devices without any problems. Sometimes there are glitches, but they usually get resolved pretty fast. I've never had a problem with this software in 2 years now.
I have used it to manage multiple devices from different countries and time zones. At times it can be slow, so if you're looking for a quick way to send messages to your IoT device I would think about going with another option. I use this mainly to control my home automation devices.