second time lexapro after 9 years taken

hi,
I am very worried …my case is this way: i took 9 years cipralex 20 mg, unfortunately i had to stop IT …long story.. for 4 years( i was on seroxat -paroxetine ) but IT stop working suddenly…
now I am taking again lexapro , about 4 months, is IT possible to doesn’t work again? I need help🥺