There is no one to re-enable a Instagram account after deletion. It
says so in Instagram's Help Center.
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Instagram is only a photo sharing application.
You can just post, share, like and comment on a photo of a
instagram user.
There is no chat feature in instagram so not possible.
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Say that so-and-so has everyone, I also want to have an account. If you want to become popular - come to Lowcostsmm (site can be searched by domain in Google). There you can buy Instagram subscribers and many other things for the profile.