Adobe - Dreamweaver Customer Service Issues

Hello, After a year or more, I recently returned to update my four websites such as WolfP.com using Dreamweaver CS3. Due to the COVID-19 pandemic, there was a long break in my work. When attempting to make changes and add new pages, a message appeared requesting to renew the "Activation Type: Repair" for my Dreamweaver software. The provided phone numbers led me to find out that phone services are no longer available. My Apple G5 with 10.4.11 Classic operating system no longer supports a functioning browser, and CS3 is incompatible with my newer Intel chip Macs. I am considering reactivating CS3 on my G5 by entering the Authorization Code, but I am unsure how to retrieve it since my G5 cannot access websites. However, I can still use FTP to connect to my server provider. I am feeling quite lost in this situation. Thank you for any assistance you can provide. Warm regards, Wolf P. Weber