Bill Pay System Experiencing Some Payment Issues

Went online last night and again this morning to pay bills as I've previously done.   After entering my bill pay information and selecting button to pay, I received the following message: "Our system is experiencing some issues.  Please try again a little later."  I experienced this message 2 days in a row, regardless of changing pay dates and regardless of which brower I used.  I called 'online banking support' for help.  They were not aware of this problem.  They assigned me a case# saying someone should email me back in 2 biz days.  So, for now, I can't pay my bills online with U.S. Bank.  I asked if it had anything to do with the recent merger btwn Union Bank and U.S. Bank.  The US Bank rept said, 'No'.