Creditors can lower your credit limit at pretty much any time and for any reason, as long as it’s allowed in your user agreement. It happens to people with good credit and bad credit, to people who have been with their bank for a decade or less than a year. In other words, it can happen to anyone, but you’re especially at risk if you make late bill payments, have accounts in collections or if you filed for bankruptcy.
https://twocents.lifehacker.com/what-to-do-when-your-credit-limit-is-lowered-1826668613
* especially at risk * check your credit report * Credit Karma * few resources * on that * that may be * able to help you