7 files declare their use of CampaignMonitorManager in Campaign Monitor 8.2

CampaignMonitorAdminForm.php in src/Form/CampaignMonitorAdminForm.php

CampaignMonitorListDeleteForm.php in src/Form/CampaignMonitorListDeleteForm.php

CampaignMonitorListsController.php in src/Controller/CampaignMonitorListsController.php

CampaignMonitorListSettingsForm.php in src/Form/CampaignMonitorListSettingsForm.php

CampaignMonitorSubscribeBlock.php in src/Plugin/Block/CampaignMonitorSubscribeBlock.php

CampaignMonitorSubscribeForm.php in src/Form/CampaignMonitorSubscribeForm.php

CampaignMonitorUserManager.php in modules/campaignmonitor_user/src/CampaignMonitorUserManager.php