I'm trying to add a fifth xe75 access point to my existing network. I've added all the other ones with the app no problem but this one, which is one of two in a pack that I purchased will not be detected by the app. I've tried resetting the access point to default, I get a blue blinking light but my phone does not see it. I positioned it in the vicinity of the main deco. I have rebooted my phone and make sure that the app has all permissions needed. At this point I'm not sure what else to do?