You need to keep the app and Mendix backend in sync. Small updates on the Mendix node, where the native app logic and entities used in the native app are not changed, will work. Anything larger requires a new build. In this case, the Mendix runtime but also for Mendix 9, a lot has been changed in the native modules like nanoflow commons and native mobile resources. You will need to update your appstore app to get it to work again. Please note that currently turning on OTA will break local development. Mendix is working on that one. So best to build a new app, with OTA turned off, allow it to update the native template and then publish it to the stores. For the next major Mendix upgrade, be advised to plan the native app release accordingly.
@marcel do you think it is possible to make a intermediate (‘tussen’) version / build that is compatible with both versions of the server (runtime mx8.18 and mendix 9) ?
in this way, our users have as little inconvenience as possible …