Under payment details every time I enter £ it replaces it with ?

Thanks for taking the time to reach out to us here, userfordfloors.

I'd like to help, but I need more details about your concern. When you say payment details, are you trying to record payments for bills or invoices? You can add a sample screenshot of the page you are working on. Just make sure to grayed out any sensitive information. This way, we can check what's causing this behavior and help us come up with the steps to resolve your issue. 

I'll be standing by for your response.