How do I use the ir blaster on my galaxy tab pro 8.4?

[I'm not a robot]

I got my samsung galaxy tab pro 8.4 about a month ago. since then, I have not gotten the chance to use the ir blaster. The WatchOn app says that it cannot reach its servers and on the playstore, the description reads that it is no longer available. I have not found an alternative app and without one, the ir blaster is useless. Please help.