I use the GearVR version from Sideload VR, but if you want to disable Oculus software just purchase/use Play Cardboard on Google Play: https://play.google.com/store/apps/details?id=com.kunkunsoft.cardboardappforgearvr
Try the NOLO on its own (with your phone) with the NOLO tetris app: https://play.google.com/store/apps/details?id=com.lyrobotix.nolodaydream&hl=en
If you're still having issues there then I'd recommend trying another room!
Also might be worth sending an e-mail to but they might be a while to respond.
Ah that's sad to hear :( maybe try a USB powered fan on the front with a battery pack?
If you have a 2015 white Gear VR then this looks pretty cool: https://www.amazon.com/Samsung-Cooling-COMPATIBLE-consumer-built/dp/B01KPTSQ4W