Used many third party sfps in the Meraki switches with no issues. If however you run into problems in the future and raise a case with support they will ask you to replace it with a Meraki one.
If the sfp you’re using doesn’t show up and Meraki don’t make one....I think there’s your answer
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.