This exact thing is one of the biggest issues in the game. Honestly as someone that doesn't have the +4 elemental resistances I don't feel bad at all for anyone that does and now can't do anything with their tools. Its the sacrifice you make to have that elemental resistance advantage that the vast majority of players don't have. Call it selfish but it is what it is.

With that being said they need to fix the TI so it drops the +4 again and it will resolve EVERYONE'S problems