I go to log on to the SV and it says I am banned for "client mods"

I dont know what happened or why i am banned, someone please explain. I have never hacked and have no intentions of it.

hi kill. earlier today i found you had posted an img of your own base showing you using some modifications to your client. the img in question shows you have overlays for your armor and waypoint showing your nearby base.  unfortunatly these type of mods are considerd cheating. 

hi kill. earlier today i found you had posted an img of your own base showing you using some modifications to your client. the img in question shows you have overlays for your armor and waypoint showing your nearby base.  unfortunatly these type of mods are considered cheating

 thats just bad lion client it has no competitive advantage I had no idea that this is considered cheating because badlion client is very big on anti cheat. Is there any way I could get on banned or do anything? SV is one of the only mc servers I play on.

Hello.
We do not allow badlion as it contains minimap/waypoint/armorHUD/Schematica/other mods. We have a napproved list of mods we expect all players to follow.
Web link: https://strictlyvanilla.org/Home/Rules

Sorry, however, this ban will not be lifted unless the owner themselves lifts this ban. You are ALWAYS welcome to join on a new account, just please do not use badlion or other clients on our server. Vanilla client (With optifine if neccessary) is allowed, along with other mods shown in that list, are not a problem to play with, however minimap waypoints and schematica are unfair advantages, as outlined by our server owner. 

Sorry, but our official stance on this current account is Appeal Denied.

I would not have posted the image if i knew that it was against the rules. I understand now that is not allowed and it wont happen again but I dont think a permanent ban is neccesary for displaying my armor health which is something that is already in the game. Way points are also in the game by usage of cords. I still understand now that it isnt allowed and it will never happen again but I want a second chance sometime in the future as I have spent a lot of my time on this server and it has really upset me.

Hiya bud. 
Sorry I gotta break the bad news to you, too. The ban has been decided as permanent for this account by a majority of the admins. I do hope you come back on an alternate account.

We get that badlion is a good anti-cheat client, but it just has things we simply cannot allow here on StrictlyVanilla. I really am sorry to have to break that bad news to you.