@Dorothy ***********
, Look at and READ your stamp :O It says 'extension of stay permitted until" and it has the word TOURIST stamped on it in english
That means you have a normal 30 day extension, you do not have an extension based on being "unable to travel due to covid-19" that you used an embassy letter to get and that would have an "under consideration stamp'.
So you do not need to do anything and you are covered on the near amnesty program that will let you stay not longer than the 31st of July without going to the immigration office