# Groep app fails

**URL:** <https://community.homey.app/t/groep-app-fails/147494>\
**Category:** Questions & Help\
**Created:** [December 21, 2025, 10:06am UTC](https://community.homey.app/t/groep-app-fails/147494 "2025-12-21T10:06:23Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Ian](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ian/32/41161_2.png) [@Ian](https://community.homey.app/u/Ian)\
**Post date:** [December 21, 2025, 10:06am UTC](https://community.homey.app/t/groep-app-fails/147494/1 "2025-12-21T10:06:23Z")

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I’m using a homey pro 2019 and lately the groep app fails when I try to restart it . The error messages are:

Invariant violation. Changing numColumns on the fly is not supported. Change the key prop on Flatlist when changing number of columns to force a fresh render of the component.

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**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\
**Post date:** [December 21, 2025, 10:43am UTC](https://community.homey.app/t/groep-app-fails/147494/2 "2025-12-21T10:43:20Z")

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This is an issue with the Homey app, not the Group app. You need to contact Athom.

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<div class="post-metadata">

**Author:** ![Ian](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ian/32/41161_2.png) [@Ian](https://community.homey.app/u/Ian)\
**Post date:** [December 21, 2025, 11:00am UTC](https://community.homey.app/t/groep-app-fails/147494/3 "2025-12-21T11:00:44Z")

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How??

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**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\
**Post date:** [December 21, 2025, 11:25am UTC](https://community.homey.app/t/groep-app-fails/147494/4 "2025-12-21T11:25:16Z")

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[https://support.homey.app/hc/en-us/articles/360015784034-Submitting-a-support-request](https://support.homey.app/hc/en-us/articles/360015784034-Submitting-a-support-request)