There could be over-activity if you use multiple tools to manage your social profiles. If you travel often Instagram may also take proper precautions to protect your account.
If your account has been disabled, you can go to this link to work with Instagram to get it re-activated:
Our assistants work from multiple locations within the US do their best to manage your account and engage with your followers within reasonable levels.
We are happy to work through any issues you have as it relates to Instagram.