I like that the patches kept my sensor in place however they are NOT waterproof - the first one came off in the shower and the second only stayed on because I put a tubigrip over it to keep it in place while in the shower. The adhesive hasn't stuck very well after showering and I keep having to hold it in place for a few minutes to make sure it is still in place.
It may be the case that the patch hasn't securely adhered before showering. Patches usually require up to 2 hour adhesion period before showering or going swimming. Have a look at our online instructions here; https://www.diabeticsupply.co.uk/pages/instructions
In our experience it's the case of finding which adhesive works best for your skin and we stock lots of different types of patches for this reason. Here's a link to our sample patches: https://www.diabeticsupply.co.uk/collections/sample-packs
or Take a look at our Adhesive Patches do's and dont's here; https://www.diabeticsupply.co.uk/pages/adhesivepatches-1
We hope this helps for the next time you apply a patch!