In the beggining, when the camera flashes to Cat and Robbie, you can see Sinjin in the background sitting up. A few seconds later, it flashes back to them and Sinjin is facedown, apparently drowning. But the time between the camera changes was not enough time for someone to accidentally start drowning.
After Cat runs to go to the bathroom, Jade & Beck enter the RV and Jade has her sunglasses on top of her head. The scene then goes to Trina & Tori, back to Beck & Jade, Trina & Tori again, the back to Jade & Beck, but Jade's sunglasses vanish. Then it goes back to Trina & Tori, then Beck & Jade and the sunglasses are on her head again.
After when André tells Tori, Beck, Jade, Robbie, and Trina not to bug-out and that Cat will get them out of the RV after she goes to the bathroom, Jade walks in the back and sits down on the couch. However, when the scene flips to Tori for a second and then back at Jade, she flops down on the couch again.
Beck states that he does not drink mountain water in Jade dumps beck, but at the end he was drinking it?
People trapped in in an airtight container at 107F or 42C won't be able to speak normally or even sing. If they did so, their throats may crack under the heat or the lack of air. Response: This is a plot device and is not intended to be completely accurate.
The amount of belly Tori shows changes. When she is in the R.V., the end of her shirt is about one inch above her belly button. Then when she goes outside, her shirt is about 3 inches above her belly button. Response: The bottom of her shirt rises and falls based on her body is positioned.
Cat rushed out immediately to go to pee. However, Beck lives in his RV and should have a toilet/bathroom there. Response: It is possible he does not but that would mean him going into his parent's house and living by their rules, or Cat doesn't want to use Beck's bathroom or she didn't notice there was a bathroom inside the RV.
Even if Cat had come back earlier, they wouldn't have been able to get out of the RV anyway unless Cat knows how to hot wire a car. Jade has the keys. Plus, Cat probably didn't have her driver's license at the time. Response: She could have called the authorities to rescue the group.
Beck shown that he never clean the water in his fish tank, but how are his fish able to survive in dirty water? Response: It was gross but not that dirty. Also, it could be that he recently got the fish.