Can't get iOS app to connect - Protocol Error

Yes, DNS resolves to my proxy and I’ve set the following, although the first one was there from install.

  'overwrite.cli.url' => 'https://hecate/',
  'overwriteprotocol' => 'https',
  'overwritehost' => 'cloud.odinforce.net',

I use nginx as reverse proxy. Heres my conifg for the subdomain:

server {
	server_name cloud.odinforce.net;

	access_log /var/log/nginx/cloud.example.com.access.log;
	error_log /var/log/nginx/cloud.example.com.error.log;

	client_max_body_size 0;
	underscores_in_headers on;

	ssl_stapling on;
	ssl_stapling_verify on;

	location / {
#		include config/odinforce.net/proxy.conf;
		client_max_body_size 10G;
		client_body_buffer_size 400M;
		proxy_headers_hash_max_size 512;
		proxy_headers_hash_bucket_size 64;
		proxy_set_header Host $host;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

		# add_header Front-End-Https on;
		# whatever the IP of your cloud server is
		proxy_pass https://192.168.136.134;
	}


    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/odinforce.net-0001/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/odinforce.net-0001/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}
server {
	location / {
		proxy_headers_hash_max_size 512;
		proxy_headers_hash_bucket_size 64;
		proxy_set_header Host $host;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

		# whatever the IP of your cloud server is
		proxy_pass http://192.168.136.134;
	}


	server_name cloud.odinforce.net;
	listen 80;
}