Sorry man, but all the best in finding a solution and when you do please post it back for others. Clearly, sharing experiences is the best if not only way to get support.

The Jquery version is 1.8.2 on that page. That's the one used by SJ.

What's strange is that the read more link works on desktop, it's only on mobile devices that it stops working.

I think it's a bug of the SJ extension because it's not just the read more button, it's the whole intro text frame (that includes the read more button) that is visible, but when you click it it's as if you were clicking what's underneath...

Thank you Don for your help.

If I find a solution I will definitely post it so everyone can benefit from it.

Btw I don't know if the support service of SJ still exists but they haven't replied to anything in 2 months, not even these forum posts...

I don't know what the solution was but the technical support just solved it.

I think it had to be some bug.

Hi Philippe Gay and Don,

It is bug and our technician fixed directly on Philippe Gay's site.
I would like to lock this topic now. If you want to discuss more about it, you can ask our technicians in the ticket that they resolved for you.

Thanks!