Project works well - app writes offline devices

I created a project that works properly - the device is online, but when I create an App for it - after clicking on Preview it reports an error that the device is offline - while it is online!

Try using some worlds to describe in detail what is happening, and providing all the info that was requested when you created the topic.

Pete.

I created a project that works properly - the device is online, but when I create an App for it - after clicking on Preview it reports an error that the device is offline - while it is online!

And the requirement to provide details of library and app versions, server type and code doesn’t apply to you?

Pete.