Estraderm patches are much worse, they are well known to fall off. When I first started using them they were terrible. Then I found that if I showered the area, (bum cheek) in hot water and used Simple soap twice, rinse and dry the area briskly with a towel, they then stick like superglue. I have lots of baths and they never come off.
You can't use any soap, or shower gel that contains any form of moisturizer. I tried Evorel once and found the glue very strong ☺️