FREESTYLE LIBRE SENSOR...HELP.

Hi!! I'm a newbie here.  I did search for the topic, but didn't really find anything related to the  issue that I am having.  I have only had the Freestyle Libre 6 days and I am about to have to put on my THIRD sensor.  Let me explain.

My first one started coming off day before yesterday. I called the company and they are sending me a new one free of charge. When I put the 2nd one on, I put plenty of 'skin tac' on and followed the directions and low and behold, I bumped into the side of a door this morning and the dang thing came half way off, Knowing that the rep I talked to with the company said that when that happens, you should take it off b/c it will no longer be accurate, I took it off. So, now about to put on a third one. I have the simpatches that have the hole in the middle, but I couldn't see as to where that even helped with the first one. I was hoping to get on here and find out maybe other products that will help them stick or perhaps other areas that they can be placed. I love this thing,it has been making me more aware of what I am eating and how certain foods effect my blood sugar, but I can't afford to keep knocking them off or for them to come off b/c I was sweating from working out.

Also, I am getting much different readings from the sensor verses my Relion meter.  For example, my fbs is always high in the mornings (140-180), I am guessing the 'dawn phenomenon' as I can go to bed with perfectly normal bs and not even wake up all night then wake up to a high #. Every morning that I have had the sensor, except for the 2nd morning, it has said anywhere between 117-129, I'm thinking yay me!! But the last two mornings I checked the readings against my relion meter and the meter was showing 155 yesterday morning and 149 this morning, when the sensor was reading 129 yesterday morning and 117  this morning.  

I know this was a lot and technically two different issues but anyone that can offer help or advice on both, I would greatly appreciate it. Thank YOU!!