CepteTEB App Failed to Reactivate While Abroad and Customer Service Did Not Help

I am currently abroad and installed the CepteTEB application on a new phone. I was informed that my phone would be called to reactivate the app, which worked without any issues, and I received the call. However, when prompted to press 1 for reactivation, no matter how many times I tried, it did not work. I even attempted it using a different phone, but the result was the same. It seems there is a system error affecting users abroad. Because of these issues, I am unable to log into the application. Please address this problem. Additionally, when I contacted customer service to explain the situation, they simply ended the call saying, "We cannot do anything." Without offering any alternative solution or resolving my issue, TEB closed my complaint as "resolved" without even responding, despite me submitting a formal request to the customer satisfaction department.