Hello there, I wanted to ask why there is no 1.9 version of Security craft, could you please answer!

1. This issue tracker is not for general questions about this mod, it is for reporting bugs and, well, issues. For general questions or help with the mod's content, please use the #help channel in our Discord server.
2. Our version scheme changed due to incorrect planning after we released v1.8.3. It's since been that way, and it will probably stay like that. In the end, the version does not matter, it's just a name for something.
3. If you mean Minecraft 1.9, then the answer is that we initially skipped that version in favor of properly porting the mod to 1.10.2. We then later backported the mod to 1.9.4. There was no reason to go all the way back to 1.9 when 1.9.4 was more recent.