V70 I boot does not open and inside not accessible due to installation

Good evening Have had a problem with the trunk door since Monday. On Monday she suddenly didn’t open by remote control. The yellow angel also had no idea. I suggested to remove the plastic plug that sits instead of a lock behind the cover. My dog was in the trunk and so was still a bit of a hurry. He tried it at my request with hammer and screwdriver. Somehow I then played with the remote control and suddenly KLACK open. So bad. Today I wanted to invite something and the flap remained no matter what I tried to. Does anyone have an idea how to get the flap open? The plastic plug is intermediate soft out but led to no result. Many thanks in advance Jörg P.S. The insert is a dog cage