Guys

By mistake my dumb head by some dumb quest exchanged my TET:Dandelion weapon to box with (same?) Dandelion weapon. But not this weapon cant be enhanced anymore so it stuck as it is...Please tell me there is any chance to get it back? I had normal weapon which i made till TET and now its become useless...

Quest comes from NPC <Old Moon Guild Menager> in Velia

What you did was basically turn your weapon into a Reformed Jetina weapon. This means you're unable to gamble it to PEN anymore, instead, you're going to have to get the materials and silver and pay for it to be converted into PEN. You can find all the information you'll need for this by clicking here. I recommened doing this for your first PEN weapon, much easier than gambling it I think.

Truthfully, I'm unsure if you're able to undo this. I'd say wait and see if another user knows how this can be undone or reach out to the support team and Submit an Inquiry.