Stag12

Hi I am using Prestashop 1.6.0.9 and have received an e-mail from PayPal regarding the immediate action required further to them planning to discontinue support for SSL 3.0 on 3 December. Their e-mail states that you can go to the back office and click on the "update it" button next to the PayPal module however that button isn't there! I am really panicking as I do not know what to do and I am not connected to Addons. My Prestashop site was done by a Web Designer who I no longer have contact with and I am really stuck. Please, please can anybody help? Thank you so much.