The 100 device licence was a promo that was on at the time. That promo ended a long time ago. Also the promo licences were (substantially) not eligible for new features. Paid licences get everything.
If you had the promo licences and bought paid licences then the full featured paid licences replace the promo licences.
Removing the licences will not restore promo licences. It is quite possible the account never had the promo licences to begin with.