I set up Hubdoc for the first time recently and noticed invoices with EUR Symbols were coming through as USD. I contacted Hubdoc and they said it was down to the base currency being set as USD.
This doesn’t make a lot of sense as the invoices had a very clear € symbol. Worth being mindful of if you are setting up hubdoc.
To change the date click the company name on the top right
Base currency is in the second column