Ap-Ant-48 2.4/5G 8Dbi 4X4 Panel

so I've gotten antenna forest to wear it take a look at today now I have had these antennas for quite some time and the original seller over on Alibaba isn't a registered seller anymore so I don't know what's gone wrong there but I've had these probably since spring last year and I picked them up for a project that somebody asked me to do to disabil - I Phi through work quite a large house but I tested these very quickly and although they had a good VSWR there were just a poor performing directional antenna and I put them to one side and I forgot all about them I used something else in the end for that particular installation but I thought being trusting to take a look at these I've never opened one up and I've just come across them today ty do you know so I thought it might be interesting to see why these are such a poor antenna and you know they have got to have really really good VSW