Does the Slyfox kit have anything to do with the TPMS sensors or ECU?
Have you checked the tire pressure in all of your tires, including the spare?
If all you did was reset the other codes then they're probably going to return.
If the sensors and ECU were working prior to the other lights coming on then they probably need to be reset/uploaded to the ECU. It's also possible you have a bad sensor as well as a low tire at the same time.
Check the pressure of all 5 tires and air up to 32 PSI. See if the solid light goes away and you have only the flashing light. If so, lower each tire, one by one, to 20 PSI and see if it goes back to solid light. If so, the sensor in that tire is working. Air it up to 32 PSI again and go to the next tire and repeat.
When you lower a tire to 20 PSI and it doesn't stop the blinking, that's the one with the bad sensor. If you have multiple bad sensors then you'll send a reader to see which ones are bad. OEM sensors are probably DENSO and some shops say they cannot read them, but there are devices that can read and then write them back to the ECU, but you'll need a shop to install new sensors.