Question about Divoom Pixoo 64

Various things can happen. When the network failed, I experienced, for example, that very high values were displayed on the weather screen.
The temperature was displayed at 100 degrees.
After reconnecting, everything was back to normal. I have also experienced question marks being displayed with other images/animations.

If there is no connection, the searching WLAN symbol is shown at the beginning. After that (at least for me) the last picture or nothing is shown^^. But mostly (99%) the last picture. As soon as the WLAN works, everything sets itself up. Having the app is also an advantage. But you can only use it to control the Divoom if you have WLAN. Mobile data doesn't work there either.

Unfortunately, I can't answer this question as our WLAN is always on.