Congrats on updating, I can imagine it's quite different from the '97 version from what I remember too, of course I only used the free one way back so ... lol
The stylesheet shouldn't interfere with your updates as long as the stylesheet itself is saved. In other words, if you have the stylesheet file open in your editor and are messing with that too, that file will need to be saved for the updates to show in the preview window. But... the html file should not need to be saved to see your changes ever. Also, if your style code is internal rather than in an external page then no saves should need to be done at all for the changes to be able to be seen in the preview, only external stylesheets need saving.
I'm not sure if you're saying the logo issue is a problem or you're just reminiscing so you'll need to let us know if there's a problem there lol.
I'm sorry to hear you purchased it again, and maybe if you get in touch with CC they might work something out for that. Email addresses change a lot over the years and I'm pretty sure they are able to update all that for you as they did for me. Next time just contact them and have them help you get updated, I'm sure they will help as much as possible. They would still have the old email address in the system, but as long as you can show who you are I'm sure it isn't a problem to update that

Have fun with the new version, it definitely is worth the upgrade for sure
