FC + CC = TC, so there is a problem with your chlorine numbers. Maybe try those tests again. Also, if this is a chlorine pool, then you don't have any bromine. (The testers can also be used for bromine pools, and that is why those markings are also on there.)

I'm not sure what you mean by Sant. Level 7.5 ???

PH, TA, CH and CYA are all fine. With a cya level of 50ppm, you need to keep your cl between 3-6 all the time and shock level will be 15ppm.

With cya of 50 and basically no chlorine, you have the perfect conditions for algae to start but typically if there is algae, your water won't be clear and green but more likely murky or cloudy and green (or just cloudy if the algae bloom is just starting.) Clear and green usually does mean metals. But, at any rate, if you do have metals you can deal with that after you get the water balanced. If there are metals present, you may get some staining, but you can clear those up after the water is sanitized.

You need to shock the pool up to about 15 and try and hold it at that level as consistently as you can. Test at least twice (and 3x is better) and each time, add enough bleach to take your cl level back up to 15. Run your pump 24/7 while working to clear the pool. The best times to test and add bleach are early morning and in the evening when the sun is off the pool. If you can do it one or two more times during the day, all the better! When you get to the point where you are losing no more than 1ppm of cl overnight from sundown to sunup, then you can let the cl level drift back down and then keep it between 3-6 all the time.

In a 14,000 gallon pool, each quart of 6% bleach will raise the cl by 1ppm.

Do NOT use any more of the chlorine pucks. They are stabilized which means they have cya in them and you do not want any more cya in your pool. Stick with bleach or liquid chlorine.