Dynamic Email subscription

Hello everyone,

I have tried sending dynamic subscriptions for my paginated report and have encountered the following issues:
please help me with this.

1) Single code selection for Multiple mail ids
 I am unable to send the same code to multiple email addresses. Due to the limitation of 50 rows, I need to add more rows since I need to send subscriptions for almost 1200 selections to 1200 different email addresses. Can anyone help me with this?
I attempted to add these email addresses in a single cell under the Mail_Id column, but it didn't work: [email protected]; [email protected]; [email protected].

2) Not sending Subscription to few mail IDs
When sending subscriptions to multiple email addresses, suppose I have 10 codes for 10 different email addresses, but the subscription is only being sent to 4-5 of the email addresses and not the remaining ones. This seems unusual to me, and I haven't found a solution after searching. Please help me with this issue as well.

I have referred to the following table for the same