Hi Oihana,
Do you get this issue on Android or iOS? Please try full deploy application and please make sure you had upgrade Appeon Workspace on device.
Do you use Appeon Workspace in Apple store? Please note that it supports PowerServer 2019 but not PowerServer 2020.
Due to the restrictions of the app stores (Apple App Store and Google Play), publishing Appeon Workspace to App Store is not supported anymore. We recommend that you create a customized version of Appeon Workspace and distribute it on PowerServer or your own Web site.
If you want to get a sense of how Appeon Workspace works before distributing it on your own server/website, or perform a quick test of your mobile apps in Appeon Workspace, follow the instructions at https://demo.appeon.com/powerserver/test_appeonworkspace to try out the demo version of Appeon Workspace.
Regards,
ZhaoKai