Zorin 16 Pro OS install won't erase the presently installed Zorin 15 OS
 

I just purchased the Zorin 16 Pro and intended to install it in place of my Zorin 15 OS side by side on my HP windows 10 PC. The instructions sat to use the try Zorin OS , click Zorin Menu, System Tools, and then "GParted. In the Partitin list , right-click on the "linux swap" partition and select "Swapoff" and proceeds from there with Right- Click again on the "linux swap" partition and select "Delete" Your current Zorin OS should be present on an "ext4" partition. Richt click on it and select to "Delete" it as well.
Press the button at the top of the app to apply these changes. Then I am to close the GParted app. and then install the new copy of Zorin.

This all went well until I opened the Gparted app. and there was no "linux swap" in the Gparted app. There appears to be an un-updated app. which leaves me with no way to erase the old system. Is there a way this can be done "easily" I'm bumping 80 years old & the technical language to do it without an app. that completes it for me makes my brain rattle any more.
Thanks for your help.
I also have managed to lock myself out of my installed Zorin 15 OS. Perhaps I'm starting to get old?

You might find it easier to use Windows to delete the non-Windows partitions, then boot the new Zorin installation media to install to the freespace freshly created by Windows. Just be sure your backup of important Linux data is good first.

Never tried Zorin but according to their website the Pro edition includes installation support - you paid for it, so use it.
But you don't need to worry about there being no swap - just proceed as if you had deleted it.

Pretty crappy "upgrade" in my opinion.

Both answers were Helpful. I did get an answer from the zorin group explaining that they had another set of instructions that would not be confusing. Thank you!!
Incidentally, I do like the Zorin 16 OS. It works great with the either firefox or Chrome and is just as fast or faster with Chrome as Chromebook.