Well, I got all three exam certificates and like the guide on the main site said, I talked to the curator, and now I dont have them anymore. The workmen stop me and tell me I need my certificates to dig, and I can't get more copies of the certificates from the expert so...what do I do now?

Do u have the specimen jar and specimen brush? Are u digging in a lvl 3 digsite? Can't remember, but its possible u can only dig in lvl 3.

The level 3 one is at the very top I think,top right corner site. You need speciman Jar + and the brush thing