What does the "Limit on concurrent pegged-to-stock and volatility orders exceeded" reject message mean?

Orders may be cancelled automatically for a number of reasons. Please refer to the order cancel notification for details of a specific action.

Note…

Overview:

Traders may only have 3 volatility based orders active in a single account at any given time…

IBKR imposes certain limits on the number of active orders an account is able to have outstanding at any one time.

If the total number of active orders in any one account exceeds 10,000, any new orders submitted in excess of 10,000 will be rejected.  …

There is no overall limit on the number of ISA accounts, but you can only subscribe to one type of each ISA in the same tax year. This means if you have already subscribed to a Stocks & Shares ISA with a different provider in the current tax year, you cannot also subscribe to an Interactive Brokers Stocks & Shares ISA…