You don't need an advanced license to use ACLs, but you do need an adaptive policy license.
It may take 1-2 minutes for the changes to the ACL to propagate from the Meraki dashboard to the switches in your network.
https://documentation.meraki.com/MS/Layer_3_Switching/Configuring_ACLs
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
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