Mine was covered in tape as well. I gently pealed it off and managed to leave most of it intact for when I put it back together. Also had the two cables connected at the top left, they can be detached and reattached in the same way as the other two at the bottom. Just lift them off using a spudger when detaching then hold them in place with tweezers whilst pushing down on top with a small screw driver until it clicks in when reattaching.
I used guitar picks to wedge inside the case as I prised it open
I used a hair dryer for this which worked fine but I didn't need to heat it for as long as I did. 10-20 seconds is enough to start. I didn't realise how hot it would get so after heating for 90 seconds on high heat the phone was absolutely roasting and I've got two spots of heat damage on my screen. Still all works though luckily.