nginx: react native url refresh leads to 404 - react-native

Question

also after googling quite a bit I was not able to find the solution. I'm running a Plesk for Ubuntu and am currently deploying a react native app. All url-paths checkout fine and navigation within the app works. However if I'm for instance on www.mydomain.com/something/something and I refresh the page the refresh leads to a 404 error.
What I tried now
I ssh'ed into /var/www/vhosts/system/mydomain.com/conf and udpated the file nginx.conf with
server {
location / {
try_files $uri $uri/ /index.html?$query_string;
}
}
I restarted the service, however this does not do the trick.
Any idea how to fix that?
Thanks
Matt
Here is the full nginx.conf file:
#ATTENTION!
#
#DO NOT MODIFY THIS FILE BECAUSE IT WAS GENERATED AUTOMATICALLY,
#SO ALL YOUR CHANGES WILL BE LOST THE NEXT TIME THE FILE IS GENERATED.
server {
listen 175.31.15.213:443 ssl http2;
server_name example.com;
server_name www.example.com;
server_name ipv4.example.com;
server_name "example.com.52-29-213-14.svr.fm";
ssl_certificate /opt/psa/var/certificates/certXTrwD4;
ssl_certificate_key /opt/psa/var/certificates/certXTrwD4;
ssl_client_certificate /opt/psa/var/certificates/certL2SKRF;
client_max_body_size 128m;
root "/var/www/vhosts/example.com/httpdocs";
access_log "/var/www/vhosts/system/example.com/logs/proxy_access_ssl_log";
error_log "/var/www/vhosts/system/example.com/logs/proxy_error_log";
if ($host ~* ^1519\.tirol$) {
rewrite ^(.*)$ https://www.example.com$1 permanent;
}
#extension letsencrypt begin
location ^~ /.well-known/acme-challenge/ {
root /var/www/vhosts/default/htdocs;
types { }
default_type text/plain;
satisfy any;
auth_basic off;
allow all;
location ~ ^/\.well-known/acme-challenge.*/\. {
deny all;
}
}
#extension letsencrypt end
location / {
proxy_pass https://175.31.15.213:7081;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Accel-Internal /internal-nginx-static-location;
access_log off;
}
location /internal-nginx-static-location/ {
alias /var/www/vhosts/example.com/httpdocs/;
internal;
}
location ~ ^/(plesk-stat|awstats-icon|webstat|webstat-ssl|ftpstat|anon_ftpstat) {
proxy_pass https://175.31.15.213:7081;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Accel-Internal /internal-nginx-static-location;
access_log off;
}
location /internal-nginx-static-location/ {
alias /var/www/vhosts/example.com/httpdocs/;
internal;
}
location ~ ^/(plesk-stat|awstats-icon|webstat|webstat-ssl|ftpstat|anon_ftpstat) {
proxy_pass https://175.31.15.213:7081;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Accel-Internal /internal-nginx-static-location;
access_log off;
}
location ~ ^/~(.+?)(/.*?\.php)(/.*)?$ {
alias /var/www/vhosts/example.com/web_users/$1/$2;
fastcgi_split_path_info ^((?U).+\.php)(/?.+)$;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_pass "unix:///var/www/vhosts/system/example.com/php-fpm.sock";
include /etc/nginx/fastcgi.conf;
}
location ~ ^/~(.+?)(/.*)?$ {
proxy_pass https://175.31.15.213:7081;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Accel-Internal /internal-nginx-static-location;
access_log off;
}
location ~ \.php(/.*)?$ {
fastcgi_split_path_info ^((?U).+\.php)(/?.+)$;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_pass "unix:///var/www/vhosts/system/example.com/php-fpm.sock";
include /etc/nginx/fastcgi.conf;
}
location ~ /$ {
index "index.html" "index.cgi" "index.pl" "index.php" "index.xhtml" "index.htm" "index.shtml";
}
add_header X-Powered-By PleskLin;
include "/var/www/vhosts/system/example.com/conf/vhost_nginx.conf";
}
server {
listen 175.31.15.213:80;
server_name example.com;
server_name www.example.com;
server_name ipv4.example.com;
server_name "example.com.52-29-213-14.svr.fm";
client_max_body_size 128m;
if ($host ~* ^1519\.tirol$) {
rewrite ^(.*)$ https://www.example.com$1 permanent;
}
return 301 https://$host$request_uri;
}
server {
location / {
try_files $uri $uri/ /index.html?$query_string;
}
}