Check back on Fenlander's Aerotec repair project topic - if it is fine with the rudimentary pull test and if it is only a few mm's then this sometimes happens and it's no big deal. I have had that on boats where literally it is only the first mm or so in a couple of spots (although this was on the transom) and I just squeezed in a tiny bead of mastic, closed up the gap, cleaned up and that's it. Stops any further water ingress and potential damage.
Of course if it pulls away then you need to consider a much bigger job.
People have often talked about a 'ten' year glue issue with Zodiac boats but this must be open to so much variation in terms of storage, use, abuse, sun exposure etc, etc...
We don't know what you paid for your boat - Denmark is not cheap I'm guessing but looking at it your boat is super clean and minty mint.
The material and transom and floor on these things is very well made and hard wearing. I would keep it and just set aside the fact that you might have to pay for a re-glue via a decent pro and then you are set for many many years to come.