Paypal has blocked you because it’s policy clearly states as you should be atleast 18 years old, please read: USER-AGREEMENT before sign-up. https://www.paypal.com/gb/webapps/mpp/ua/useragreement-full?country.x=gb&locale.x=en_GB
As per my knowledge, Paypal has one of the best Risk & Fraud Dept. to counter any fraud when you compare to other providers in the industry. Also, if you are in Europe then Paypal operates as a bank and it’s you & paypal might be violating Government Rules & Compliance and they will have a policy to hold your money for a while. I know Papal needs to work more efficiently with their Customer Support but try giving a Call from Contact us page and hopefully they will explain you this matter in detail.