where grandparents cannot
adjust withadopt the advanced lifestyle because of their traditional mentality.
I think you have repeated the word "mental" and its forms too much, maybe replace with other words might be better? Like cognative or paradigm or simply thoughts, don't you think?
Because of their rigidness, whole family suffers as youngsters failed to learn contemporary things and parents can not intervene always thinking not to disrespect the seniors .
I'm a little confused when reading this sentence, though I understand your idea, maybe you should rephrase and pay attention to the blue phrsases because that's where i'm stuck.
In general, your essay is well-written (as for me). Your vocabulary is adequate, structures okay, ideas well organized and coherent. Love to see more to study from your essays :)