Why can I only edit a sheet on my phone and not my PC

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I am sharing a smart sheet with a business partner and we were working off the free plan at first. When the 30 day trial ended I could no longer edit so we both purchased the pro plan. However, my PC version of the sheet is still view only yet on my mobile app I am able to make changes as per usual. We have tried removing me as a collaborator and re-adding myself, making myself admin and so on. Any idea on why this is?

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