we have recently upgraded to Magento v. 2.3.5-p1
when upgrading the site we lost function of the registration flow normally if we have a user register as general customer we get a email notifying us they registered. we are not receiving this now.
when we also have a user registering as trade customer we get a email notifying us they registered we then review the account in the customer section of Magento and either reject or approve the trade account if we approved they will be emailed to notifying them they have been approved all this function is not working.
we have reviewed the old files from the backup of the previous magento site and found a SQL script with this function we need someone to get this working again we think it maybe a case of getting this script working in SQL again.
ONLY SQL, CRON JOB and PHP also Magento experts please bid only