u/ou81234567

My wife has a group benefits plan with Sun Life Financial and has been on LTD for 2+ years. She recently has been deemed unable to work and has transitioned to CPP Disability with a Sun Life LTD top up. She has been paying the Extended health/dental premiums thru her employer and continued to be on the benefits plan. This month, her premium was returned to her and suddenly she is no longer on the extended health/dental group benefit plan. This coincides with a outstanding vacation pay direct deposit from her employer that came out of the blue. No notice was given to her that this was about to happen. I cannot find any info in her Group Benefit booklet. Does anyone have any insight on how this works? Does this mean we no longer are eligible for the extended health/dental?