RLC-410 won't stay 'Clear'

I've just bought 2 of these cameras and I've configured them with my phone (no NVR for now) and I set the resolution to 2560 x 1440 (Clear) but the cameras keep revertingh back to 720p fluent and are VERY grainy.

I select 'Clear', click the sisk to save the setting then when I go back and check it's back to 'Fluent' which is 720p.

Please can someone help!

Bob

Dear Terry,
This is misunderstanding. Maybe you are not familiar with the UI and settings yet. Our support will contact you and help u solve the issue. Thanks for reaching out to us. Wish you the best.