Make sure if the transmitter got displaced that both sides are back in the correct position, i.e., the tabs on each side are clicked in.
I’ve started using Hypafix to cover the entire pod. I first cover the pod with plastic wrap (to keep water from showers entering), then place the Hypafix completely over the pod. The plastic wrap keeps the Hypafix from sticking to the pod, too, so your transmitter remains non-sticky and clean. I’m only on my second sensor using Hypafix, but so far, so good. It protects the pod so it is much less likely to displace it even if you do accidentally bump it. Also, for me, the significant improvement is that showers no longer effect the readings. I used to get sky high readings due to showers, and so far, my readings have been normal during showers.