touchable pro's wifi logo turns red and dosen't work

My touchable pro works normally when opened. But after a few minutes, the wifi logo will turn red and the ableton live cannot be controlled.
The OS of my macbook pro 2018 is 10.14.
The server version is 1.613
And ipad has been updated to the latest

Hi,

sorry for the inconvenience. Please install the latest available server 1.632 from our webpage:

https://zerodebug.com/#/touchable

Best

Pascal