Hi @PlantF welcome to the Meraki Community! Thank you so much for following up to close the loop on your post.
Members can only edit their own posts, not delete them, which is why you didn't have that option in your menu.
Actually, it's preferred that you keep your post up and share the answer in a comment. You can even mark your own reply as the solution! Then if anyone in the future has your same question, they will be able to find the answer here in the forum 😄
I'm going to mark this post as solved with the solution you shared here:
@PlantF wrote:
The below was resolved by unblocking ports 993 and 60000-61000. Ref: Systems Manager Firewall Rules - Cisco Meraki