Hi @Elizabeth Garcia ,
Could you provide the detail version number of PowerPoint for Mac? You can select PowerPoint in tab- and select About PowerPoint:
I suggest you try to troubleshoot Office for Mac issues by completely uninstalling before you reinstall, you can refer to this support article:
https://support.microsoft.com/en-us/office/troubleshoot-office-for-mac-issues-by-completely-uninstalling-before-you-reinstall-ec3aa66e-6a76-451f-9d35-cba2e14e94c0
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