Site Titles are nice, so if your customers have multiple screens open and are comparing prices between different sites they can tell which site is yours from the Tab at the top of the screen. They serve a great purpose and you can also add a Favicon which will give you a small emblem for your site on the tab as well. They help identify your site on the current tab you're browsing.
How to change the title tag on my Website.
Navigate to Marketing on the left hand side of your screen, then select “Search Engine Optimization”. From here, enter your desired title in the Page (Site) Title field and save your changes.
You can also add Meta Tags to the home page through this area.
Links to Related Articles.
If you didn't get your question answered, please contact the Pinnacle Cart Support Team. To submit a ticket, go to the My Account drop-down menu at the top right of the admin area and select Support