4 notices

Hi. Me and my colleagues are developing a website with all error messages enabled so we start off with clean code, not cutting corners ignoring notices or adding @’s. I found your plugin throws some notices, could you fix these?

Notice: Undefined index: cms_user_fields in /home/hostingaccountname/subdomain/websitename/wp-content/plugins/campaign-monitor-synchronisation/campaignmonitor-synchronization.php on line 48
Notice: get_user_by_email is deprecated since version 3.3! Use get_user_by(’email’) instead. in /home/hostingaccountname/subdomain/websitename/wp-includes/functions.php on line 2908
Notice: Trying to get property of non-object in /home/hostingaccountname/subdomain/websitename/wp-content/plugins/campaign-monitor-synchronisation/classes/CMS_Synchronizer.php on line 170
Notice: Trying to get property of non-object in /home/hostingaccountname/subdomain/websitename/wp-content/plugins/campaign-monitor-synchronisation/classes/CMS_Synchronizer.php on line 171

Kind regards,
Tim

https://www.ads-software.com/plugins/campaign-monitor-synchronisation/