Hello, I have a problem with my Minecraft on Nintendo, the problem is that I make achievements and they are not counted. I already deleted all my worlds and still nothing works, my Minecraft I already went up to support and they told me

It's been more than 1 month that I've had this problem, the achievements simply don't work, it's been a long time. I even stopped playing Mine because of that, the achievements only work in multiplayer, pls help me