Z-Wave.me Keyfob issue

I am controlling one of my door’s electric bolt with Z-Wave.me Keyfob and FIBARO Relay Switch 2x1,5kW. The keyfob works 5-6 days regular. After that time it doesnot works until take out its battery and replace the same battery again. I recognise that my vera3 gives an error at keyfob section with a question mark as I attached when that problem occurs. And here is my keyfob settings. Is there any idea to solve that issue?

Push the 4 buttons for 6 seconds until the led will flash in green then hit the key number 2. This will wake up the keyfob and the battery sign will become green again
BR

kind of off topic, but could these fobs be used as a proximity sensor?

[quote=“arrayofemotions, post:2, topic:191458”]Push the 4 buttons for 6 seconds until the led will flash in green then hit the key number 2. This will wake up the keyfob and the battery sign will become green again
BR[/quote]
I will try this formula when the next issue will occur in a week. What if pushing the 4 button won’t fix the issue?

[quote=“arrayofemotions, post:2, topic:191458”]Push the 4 buttons for 6 seconds until the led will flash in green then hit the key number 2. This will wake up the keyfob and the battery sign will become green again
BR[/quote]

Keyfob doesnot reply the activity of pushing 4 button. Same problem happen again. Is there any idea?