You can still upgrade to Windows 10 for free, until the 31st of december 2017, if you are using assistive technologies.
https://www.microsoft.com/en-us/accessibility/windows10upgrade
i can only say that i upgraded last week 2 pc's from win7 to 10 and both were activated without a problemso you purchased windows 10 licence? no free upgrade option available.
no assistive technologies needed !!
that's what you think - they were still free, in the mean time, i updated 4 of them for free
i have to test it now (in2018) if it still works
yes- plse post the laptop model