receiving error when trying to change election amount :

As of right now, her FSA election is $1040. She needs to increase it to $2240. Historically, we have also been able to end-date the initial line item (which works fine), then add a second line item for the new amount, but in her case, that won’t work, since it would put her above the IRS limit.
Any assistance you can provide would be a huge help. Thanks!