Well, it looks like I called this one wrong.
I recently had the pleasure of testing 2 E.Leclerc specials - both Elap Thallis V - that didn't receive horizontals.
The signal was checked on my existing system.
If your Visionic is an Elap Thallis clone then there maybe a common fundamental problem with both receivers (could be hardware or firmware).
I would suggest confirming whether you can receive horizontals, if not (and your dish / lnb is set up correctly) then it might be a case of getting your money back.
Brico Depot does a 79 Euro kit with a nice TBoston 4600 receiver, unfortunately the unit I installed wouldn't receive EPG from 28.2° - also the kit comes with a monoblock LNB - which I'm personally not too fond of (I replaced mine with a single universal LN
.