Connection Offline when VPN on

Hello everyone,
I have just bought the GL-iNet GL-MT300N-V2 router. I have set it up with an Ethernet cable, connecting the WAN to my modem and the LAN to my PS5. Then, I added a VPN using SurfShark (via the Glinet mobile application). Everything was working fine, but now, whenever I activate the VPN, the connection is lost, and on the Glinet portal, the connection status shows as offline.
Has anyone experienced this issue before?
Thank you for your help.

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