Hi @tania65265,
I can only suggest that you contact this [https://www.searspartsdirect.com/combo/1781-1234567/sears-canada-home-parts?sid=pla:ggl::&gad_source=1&gclid=EAIaIQobChMIyOmVzvjshgMVxRyDAx3eCAdcEAAYASAAEgJ8DPD_BwE|parts supplier] and ask them if they have parts for the dryer and a user manual and also if they may know what's wrong. The contact number is at the top right of the page linked.
Your model is a Samsung DC68-02688A-04 model made for Kenmore where it has the number of 592-89474.
There's no other information online regarding this model or at least none that I can find