what happened to my ping?!?!?!?

So i'm back from my 4 months of inactivity and my ping raised from 21 - 120 and i usually play on the first 4 servers(bravo,charlie and delta) but my ping stayed normal on Echo which mean it's still 21

I need to know what happened
Is it going to be permanently 120 or is it only for some time cuz my hits are sometimes not registering and it's annoying

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