new printer here ender 3 pro. i got my printer leveled and made a couple good prints. ran out of filament. switched to a new filament and it was sticking good after the temp adjustment then after an hour and ten minutes the base just comes unstuck. any suggestions? too hot bed? too cold?

@madDad411 i leveled the bed using a piece of paper adjusted a few settings in the g code and its doing 100% better. had to go into advanced settings added brim and support type touching build plate no more worms.

I have the same problem. it doesnt stick to the surface it just gets pushed around very easily. maybe the base isnt getting to the right temp? also i cant calibrate my rpinter useing the software it says cant connect to printer. how do i connect computer to printer?