As a follow up - I see when they click Request for Quote, the quote is actually made, and on the quotation list when viewed on desk, so I’m not sure what the next step is that they are not permitted to see?
I’m experiencing the same. I think the workaround is to add the Customer role to the website user and add an additional document type of Quotation to the role.
Open the Role Permission Manager, Select Quotation from the Select Document Type dropdown, Select the appropriate role to add it to. Once added - PLEASE BE SURE TO SELECT the Only If Creator option (otherwise the user can see all quotations)