I contacted the support : solvercircle lab (http and not https), they asked me all the admins and ftp pass to check their modules and they end up telling me that my version of prestashop was a modified version of prestashop because of thirtybees, so for that it requires a modification of their module and of course a cost for this operation...Then I had the idea to contact thirtybees forum yesterday to have maybe some clue of what was wrong..I have been sending 3 mails to explain what Datakick explained to me not mentioning anyone of course, and they just ask me to write a mail for an estimation to another service, I asked them to send me a proper version of their module..I will see what the answer will be and if it is negative, I'll ask for a refund..I see it coming that way..
Does anyone of could eventually modify this module to work on 1.6? Is it possible to do it without breaking rules of property of the module? and if it is a problem, does anyone of you know about an equivalent module ,an alternative?