exthemes dev is under ddos attack and its automatic activated ddos protection by cloudflare.
if you can't activated or deactivated license.
Read the instructions
(+) Re-Download your themes on user
(+) REMOVE your sites and ADD your sites again on user
(+) how to remove or add sites read this
(+) use new themes, if you use old themes not working
Use Code EXTHEMESTORE to get Discount 15% OFF for All Items