I have found this spigot plugin which let's you control your server from an android app. I happen to travel a lot and need this. Also I think it would be helpful for many of us.
https://www.spigotmc.org/resources/minecraft-server-remote.72231/?__cf_chl_jschl_tk__=7693222b4185142661fce614ec263b5bbe8814a1-1589491787-0-ATAJyEIxQ8Yxk3Pj3DsQLPgxh7bK-6B7I2kkXV8MGCALHho0T5LRLu220jthmjqtfBw7e5wrcDQURRMCFOMXOV2RcGgWK-GMBDDZvgOB4GnIX6rPsGWORR9XkQXbtfamRISbBFgb8M6gIIJnzKR8AWEB_-88ml8_upMvKSOmWwwoW5itPbHK6YS3uNqKxtTLFbY6Hn9lI0bLGGcrAXVgQg6gfpMATYy2mMHgY7X2uk-QZyDwPBJ8A4iB9-w52NZvFc58nUZ1RG4nvj14rLajMqkDp8vCMBZ3pxZ6EPS55gWrtLqen7UwkrvAjI6RlW74-6pLxTDRzhpk8wvQcGexGNc