Professional rubbers for table tennis blade are able to take it down to replace anytime so, its normal for professional blade's rubbers falling off itself after using for a while and it can be re-sticking back with professional gum.
Some of the high end table tennis will drop some wood pieces, it needs to be adding some gum on top to protect it
V.O.C FREE Glue, please use the hair dryer to dry it after putting it on, from originally white color to transparent before sticking it on
V.O.C Glue, please ensure it is completely dry which mean do no stick, before sticking it on with the rubber.
Rubbers cannot leave in high temperature condition area because it will aging the lifespan of the rubber and loss the features of the rubber.
Japan and Germany made non-stick rubber will have cracking easily once it has certain collision
Most of the good quality rubbers are thin and crispy therefore perform faster speed while playing, but easily break is a normal sign