I don't know much about non-Microsoft apps, but you can use Windows display settings to increase the size of most apps on your PC's display.
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SelectĀ Start button > Settings > Ease of Access > Display. To make everything larger, including images and apps, choose an option from the drop-down menu underĀ Make everything bigger.
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If you continue to experience issues with a non-Microsoft app, reach out to the software developer directly.