While the S5e is not offically supported, it is used as a testbed for WundermentOS. As such, the next release of WundermentOS for it will be based upon LineageOS 20/Android 13.
This requires a firmware update before installing, if you do not install the newer firmware you may find it very unstable and you may have your data reset.
As such, follow the firmware update guide over on the LineageOS wiki before deploying the new version of WundermentOS to your tablet.