Bug in the website blocking playing of audio material

When i go to
study-plans →
the-im-overwhelmed-study-plan →
module 1 →
part 4 →
Vocab Group 2a
I get “You should subscribe to access this content”.
Sometimes I don’t get the issue, but most of the time I do.
Is it only on my end?

You don’t have PrepSwift - which you need for the I’m Overwhelmed study plan. You need to upgrade from gregmat.com/pricing.