# Cannot connect to app - on device that previously worked

**URL:** <https://forum.line-us.com/t/cannot-connect-to-app-on-device-that-previously-worked/729>\
**Category:** Support\
**Created:** [December 15, 2021, 2:41pm UTC](https://forum.line-us.com/t/cannot-connect-to-app-on-device-that-previously-worked/729 "2021-12-15T14:41:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![edwinh](https://forum.line-us.com/letter_avatar_proxy/v4/letter/e/bb73d2/32.png) [@edwinh](https://forum.line-us.com/u/edwinh)\
**Post date:** [December 15, 2021, 2:41pm UTC](https://forum.line-us.com/t/cannot-connect-to-app-on-device-that-previously-worked/729/1 "2021-12-15T14:41:45Z")

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Hello, 1st time poster - have been using the line us for a while with no issues. However I have not used it for a while and on trying to connect my ipad (and android phone) to the robot the app will not find the device. I am connected to the line us setup wifi and can see the config page at 192.168.4.1 with no problem. Its the app that cannot see the device I have tried a factory reset and different power supplys as well as installing the app on a fresh device (andriod phone) with no luck?

any ideas?