Udemy Personal Plan Still Charges Me for Many Courses

I have had an annual Udemy Personal Plan subscription for approximately one year. I purchased this subscription so I could access courses on the platform more easily without paying additional fees. However, despite having an active subscription, I am asked to pay again when I try to enroll in many courses, particularly those related to language learning and engineering.

Based on the purpose of the subscription, I believe I should have access to a broad selection of courses without making additional payments. Being charged separately for many courses is confusing and undermines the value of the subscription. I have also struggled to report this problem to Udemy because I cannot find a clear, direct customer support channel.

I expect Udemy to provide access to all courses without additional charges under my annual Personal Plan subscription. If that is not possible, the platform should explain much more clearly which courses are included and excluded from the plan. I am also requesting an appropriate resolution for the inconvenience I have experienced.