The advisor is no longer relivant.
Only way now is to update to Windows 10 mobile using the OTC updater.
OTC updater is in this discussion
To start out clean without baggage, use the Windows Device Recovery Tool
https://support.microsoft.com/en-us/help/12379/windows-10-mobile-device-recovery-tool-faq
This will give you a clean start and a fresh install of 8.1
Do not use a backup when the phone restarts, still be on 8.1 so no apps will install.
You don't even have to add your MS account yet, just let it finish.
Then use the OTC updater, do not use any backups. check for updates, there will be more.
When all is finished updating add your MS account. Go to the store, menu top left, my library. Select which apps you want to install.