It doesn’t connect to coffee shop wifi. Neither does it open the portal. When connect to another type of wifi, as in a portable hotspot it connects at horrible speeds. Is it possible that the coffee shop ISP prohibits use of VPN? Honestly, I need 100mbsp speeds, the best I can get is mid to low teens using VPN. I opt for wireguard. OpenVPN is even slower.
You can try the method in the link first