API credential error

[moscowballet]

This transaction cannot be processed. The merchant's account is not able to process transactions.

2018/05/15 10:11:50 [error] [payment] Paypal response: array (
  'TIMESTAMP' => '2018-05-15T15:11:50Z',
  'CORRELATIONID' => 'd1300cf98c152',
  'ACK' => 'Failure',
  'VERSION' => '65.1',
  'BUILD' => '39949200',
  'L_ERRORCODE0' => '10548',
  'L_SHORTMESSAGE0' => 'Invalid Configuration',
  'L_LONGMESSAGE0' => 'This transaction cannot be processed. The merchant\'s account is not able to process transactions.',
  'L_SEVERITYCODE0' => 'Error',
  'AMT' => '300.00',
  'CURRENCYCODE' => 'USD',
)

[aces235]

Hi, where did you see this? We've been noticing a huge drop off in customers once they hit the paypal checkout page. Our conversions have dropped significantly. Trying to figure out if Paypal has been having issues.