Over the menu, the "Statistics" dialog can be opened.

There, data (since the start of the CTC-App) for all CTC-Modules is collected:

Statistik

Column Meaning
Name Name of the CTC-Module
IP-Addr. Current IP address of the CTC-Module
Last Msg. Rec. Timestamp (app) when the last message from the CTC-Module was received
#Msg Rec. Number of messages the CTC-App received from the CTC-Module
#Msg.Miss Number of sync messages to which the CTC-Module did not respond
Avg.Rev.Intv. Average interval between two responses to the sync message
Max.Rec.Intv. Maximum interval between two responses to the sync message
#Reboot Number of reboots of the CTC-Module
Msg.Num Running number of the message from the CTC-Module
Dev.Time System time of the CTC-Module
Dev.Heap Free heap memory on the CTC-Module
Sig WiFi signal quality

A small number in "#Msg.Miss" is not a problem. If failures are frequent for individual or even all CTC-Modules, you should optimize your WiFi. Some tips can be found in Chapter 3 - "WiFi"