You can vote for the server by using;
While on the server OR you can go directly to the voting sites using the links below:
1) MinecraftServers.org - http://minecraftservers.org/vote/481200
2) Mc-servers.com - https://mc-servers.com/mcvote/2409/
3) Minecraft-Tracker.com - https://minecraft-tracker.com/server/5461/vote/
4) Serverlist.games - https://serverlist.games/vote/674
5) PlanetMinecraft.com - https://www.planetminecraft.com/server/moth-s-minecraft-server/vote/
Once there, type in your Minecraft username and follow the instructions on the site.