Deionization RO System Filter Set

Impossible to change out filters. And I can’t return because I opened them to soak for 30 min before trying to open the canisters. Huge waste of money. Same issue happened with the whole home canisters. I have spent $2000 on filtration from them. The units are not meant to be changed out every 6 months. They are in my opinion 1 time use.