Error 404 - Read Cell Google Sheets

I keep getting error 404 when I try to Read Cell or do anything with a Google Sheet that I just attached to.

My first activity is Use Google Sheet. In it, I have my Account, Action: Use existing, Spreadsheet file: [Current file] Name, Reference as: CurrentInvoice.

Next is the Read Cell. Spreadsheet: CurrentInvoice, Sheet: Invoice, Cell: E8, Save to: CustomerID. It has error 404 everytime I get to Read Cell. I tried putting in another action instead of Read Cell such as New Sheet, but I still get the same error. It seems like I am not really connected to the sheet in my Use Google Sheet activity. Is that correct? If so, what do I do about it.

Many thanks.