A few observations worth noting
1. Crucial is regarded as a reliable brand, and the memory you have is as stock conservative as it gets for DDR4-2400. In your case, this is a good thing. Generally less complication, less trouble.
2. You've got a good motherboard. The ASRock Fatality series is good.
3. Per Crucial, you have the correct RAM part (SKU) picked out for your motherboard. So compatibility has been established. In theory, you should be all good here.
4. I've noticed your memory timing is set to 2133, which will support CL 15 per the JEDEC tables. That said however, it should be set for 2400 so it can adhere to the stock JEDEC table settings of CL 17.
5. As for modifying the JEDEC tables, I seriously doubt that's reprogramming the SPD chip. Most likely, you're just copying the values to BIOS, then making the change in BIOS which is overriding what's on the DIMM. Basically, it's a custom overclocking JEDEC profile.
That all said. I think it's time to take a step back and re-evaluate your current settings. Start with basics. No overclocking, no tweaking. Start with stock standard CPU and RAM (auto) settings first. To do this, clear your BIOS (CMOS) settings back to system defaults and go from there.
Also, be sure to check DIMM placement. I pulled up your manual online (link below to the PDF). It says to populate slots A2 and B2 for two DIMMs. Not sure why it matters (say opposed to A1 and B1), but safe to say it's best to go with what the manual says. It's on Page 17.
As for the BIOS settings, I'd stick with EZMode as on Page 56. Do NOT use XMP Profile mode for memory. Leave it to AUTO. If you must, adjust your boot settings and device options. But for the love of all that's holy, don't over clock or enable OCing of any type. Save settings and let it boot.
Once done, see if you can take another screenshot of the memory as reported in CPUZ like last time.
http://asrock.pc.cdn.bitgravity.com/Manual/Fatal1ty%20Z370%20Gaming%20K6.pdf