A BLUE BANNER IS A YELLOW BANNER???????

Thats because you are useing eaglrcraft 1.12u0. 

Here is my website for the newest versions! I Hope you enjoy it!

https://minecraft194eaglercraft.weebly.com/ 

My website had the newest versions of Eaglercraft, including 1.12u1 and 1.20

Does it work?

1.19 works

1.9 you mean?

1.19 eagler would be amazing lol but prolly just crash a shit ton of times