Union officials explained that in several hospitals, teachers have been turned away or forced to wait for long hours because the system could not verify their details.
In other cases, medical staff have struggled to process claims, leaving patients uncertain about whether their treatment will be covered.
KUPPET says the situation has created anxiety among teachers, especially those dealing with urgent medical conditions.
Some members have reportedly been forced to pay medical bills from their own pockets after the system failed to confirm their eligibility at health facilities.
The union leadership warned that if the problems are not addressed within the next seven days, teachers may take industrial action.
They said the notice is meant to give the health authority enough time to fix the technical issues and restore confidence in the system.
KUPPET officials emphasized that teachers contribute to the health scheme and therefore deserve reliable services whenever they visit hospitals.
They argued that healthcare access should not be disrupted by technical failures, particularly for workers who rely on the system for treatment and medical support.
Union leaders have also called on the government to ensure that all health facilities are properly connected to the system and that staff are trained to handle the digital platform effectively.
They noted that many hospitals appear unprepared to fully operate the system, which has contributed to the difficulties teachers are experiencing.
In addition, the union urged authorities to improve communication with users so that members clearly understand how the system works and what steps they should follow when seeking medical care.
The strike notice has raised concerns about the possibility of disruptions in schools if the standoff between the union and the health authority continues.
Teachers are a key part of the education system, and any industrial action could affect learning in secondary schools across the country.