Leaks & Sprays from the top

When we first installed it it worked fine. When it was time for the replacement filter we had to unscrew the top and then screw it back on.....simple enough right? Now it sprays from the sides. I even tried putting an extra band on top to seal it and also used plumbers tape and it still sucks. I would not recommend this unless you have time to try and fix it all day. The poorly designed plastic piece at the top does not seal the water in.

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