I think the issue is that Civi is (1) not enquing the versions of jQuery that come with WordPress and (2) the code is not written for noconflict mode.
?page=CiviCRM&q=civicrm/ajax/l10n-js/en_US&r=NJqDM:8 Uncaught TypeError: Cannot read property '_defaults' of undefined
at ?page=CiviCRM&q=civicrm/ajax/l10n-js/en_US&r=NJqDM:8
at ?page=CiviCRM&q=civicrm/ajax/l10n-js/en_US&r=NJqDM:103
?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:32 Uncaught ReferenceError: cj is not defined at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:32 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:192 Uncaught TypeError: CRM.$ is not a function at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:192 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:208 Uncaught TypeError: CRM.$ is not a function at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:208 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:259 Uncaught TypeError: CRM.$ is not a function at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:259 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:400 Uncaught TypeError: CRM.$ is not a function at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:400 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:403 Uncaught TypeError: CRM.$ is not a function at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:403 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:563 Uncaught ReferenceError: cj is not defined at skipPaymentMethod (?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:563) at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:577 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:618 Uncaught TypeError: CRM.$ is not a function at ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:618 ?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2:621 Uncaught ReferenceError: cj is not defined
Administer -> System Settings -> Resource URLs