While I feel sorry for the things that happened to you, allow me to enlighten you with a few facts:
a) We have been without working EPL for a month now.
b) Both Plugins you think have caused that conflict have been coexisting with EPL for more than a year. Am not sure if the WP 4.6.1 update has triggered this incompatibility.
c) I have been creating tickets for a month, renewed all plugins and even paid $97 for your priority support without getting any feedback or even reply.
This is ridiculous as I am not a seer. Communication is the key, not hanging people out to dry. I am the first one to be passionate and patient if I know what is happening because life can be hard, or if I have an ETA for a resolution. But just to go MIA is the wrong way to go especially if I have a client who is breathing down my neck.
I am currently testing another solution because honestly I have lost my faith in you. EPL is a wonderful product and I have enjoyed it for a very long time. But I can not explain to my client that despite a good product he does not get the same good support if things go wrong. After all we all run businesses and rely on good communication and support.
Hence I really need to insist on getting my refunds and wish you all the best.