Threads no longer available in Turkey following a decision by the Turkish Competition Authority:

Within the framework of the current findings; It was decided to apply temporary measures to prevent data merger behavior that may occur as a result of the data transfer mechanism between Instagram and Threads.

From Meta:

Threads will no longer be available in Turkiye due to a regulatory decision

Following a decision by the Turkish Competition Authority, Threads will no longer be available to people in Turkiye starting April 29, 2024. Your Threads profile will be deactivated, but you’ll be able to download your information and delete your profile at any time. We value the Threads community in Turkiye and hope to be back soon.