Hello @Axo_another I thought I was the only one going crazy about this until I found the thread... Talked long and wide to Spanish tp-link support and as you said, they simply didn't seem to...

@Axo_another I'm having exactly the same issue with an AC1200 VPN server and TL_WR841N clients sold to me as a VPN package. Can't set VPN Client Ip inside normal LAN subnet and therefore clients...