Thanks for the full code.
This is great to look at, however, can I ask you to very clearly describe the issue. You say the issue is getting the date tags data.
Is the issue using the get_sub_field like in the following code?
$date_tags = get_sub_field('pro_perf_time_tag');
Or is the issue looping through the $date_tags array and loading the data.
Can you please go through your ode line by line and debug the variables.
Thanks
Elliot
