@DirkK-8227 Thanks for posting in our Q&A.
For this issue, did you deploy this apk via line-of-business app? Based on my understanding, if you set "Allow access to all apps in Google Play store" to "Not configured", apps that were installed outside of Managed Google Play store will be uninstalled automatically. So, it is suggested to try to set "Allow access to all apps in Google Play store" to "allow".
If there is anything update, feel free to let us know.
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.