Teleworker VPNのデータシートに下記記載がありますので、1AP辺り15までしかはれないのではないかと思いますが
VPN Tunnel
• Layer 2 connectivity between Meraki APs and the virtual concentrator
• IPsec standards-based encryption
• Tunnel both wireless and wired connections
• Multi-tunnel support - Up to 15 tunnels per AP for sophisticated deployments