I'm not forgetting anything.. Again you are, stating your opinion as fact.
Are you suggEsting the mccanns case is inadmissible because they failed to give the domestic court the chance to remedy their greivance?
That is a condition of applying to the ECHR;
The principle of subsidiarity requires that national courts must have the opportunity to
prevent, detect and redress the alleged violation(s) themselves. If they fail to provide
redress, an application may be made to the Court.
https://www.echr.coe.int/Documents/Q_A_Lawyers_Guide_ECHR_ENG.pdfIn addition;
Violations of Articles of the Convention must be pleaded substantively at first instance, with specific
reference to the applicable Convention Articles.
It is essential to plead the same Convention arguments on appeal, then to the highest national court, or any other constitutional court or court of cassation which acts as a court of last resort.
https://www.echr.coe.int/Documents/Q_A_Lawyers_Guide_ECHR_ENG.pdf