This civic does not use gas springs like the old EG one did, this one has plain tension bars - check them, if they have unlodged from the lid, it will not keep it supported.
In the old civic - there are two gas springs on either side of the hinge.
There is also 1 more problem - Do you have a big spoiler on the lid? If yes then you need to remove it. Its weight is sagging it down.