Hi, NewUser99999!
Thanks for reaching Microsoft Community. We are sorry to learn you have issues installing Diarium as it will not download from the Microsoft Store. Thanks for taking the time to let us know about this. We know how important it is for you to be able to record your daily journal on your Surface Pro 6.
Since you are experiencing this issue with the app from Microsoft Store, kindly follow the steps below:
First, make sure your Microsoft account is signed in
- Please check if Windows has the latest update: Select check for updates now, and then select Check for updates. Or, select the Startbutton, then select Settings > Update & Security > Windows Update > Check for Updates. If there is an available update, select Install now. Please restart the device so that it will be installed.
- Try to download the app and install it. If it will not work, please proceed with the next step to update Microsoft Store.
- Update Microsoft Store: Select the Start button, and then from the apps list, select Microsoft Store. In Microsoft Store, select See more > Downloads and updates> Get updates. If an update for Microsoft Store is available, it will start installing automatically.
You can also visit this page to be guided with how to resolve problems with apps from Microsoft Store.
We hope this helps you out, we highly encourage you to inform our Community by clicking on Yes or marking my post as an answer. This will help other members who may have the same issue as you. Otherwise, don't hesitate to update us so we can further assist you.
Kind regards,
Janette_Z