Extremely low Playrate in SMS -> VSL funnels

[LSerranoCopy]

We’re running offers to SMS lists that link directly to a VSL page (hosted with Vturb).

When we drive traffic from ads to the video, we usually get >80% playrate.
But with SMS traffic, we’re seeing playrates between 6–12%.

Note: Using Vturb's browser tracking, we noticed Safari maintains ~40% playrate, while other browsers stay below 5%.

Has anyone dealt with something similar? Would appreciate any insights.