Every time I go to enchant my shovels, axe or pickaxe I get the same enchantment on all of them, I tried many different tools and all of them got the same enchantments, all shovels, axes and pickaxes were getting silk touch no matter how many times I enchanted. I then noticed the other 2 enchantments that come up were the same as well no matter what tool I used. 

The portal situation is that I create a portal in the overworld, come back through the one it created in the nether but when I come back it creates an entirely new portal roughly about 30 blocks away. I've tried breaking the new portal and going back through the one I already created but it doesn't seem to fix anything. I have a feeling due to the new linking mechanic introduces in 1.17 because it never did this in 1.16.