That sounds like the change that idlock introduced in one of their later firmwares where they did a change to how the id’s is reported. Where the app cant handle it in the proper way anymore 
How you surcomvent that is by detecting on the “who” variable with something like “Unknown [tag:18]” as a example. If you dump the who tag down to simple log you will find out what key or tag is what id.
// Ted
