You updated C1's firmware, did you? Do not update C1's firmware unless it is necessary. Maybe that caused the issue.
Please answer the following questions as many as possible,
so we can provide better support for you.
1. ReaSnow S1 firmware version/ APP version
2. your console and game
3. When did you purchase this ReaSnow S1?
Does it ever work properly?
4. The color and state(breathing or stable) of the LED indicator on ReaSnow S1 when you are in trouble?
do you hear any continuous beeps? how many beeps do you hear in one cycle?
5. Which peripherals are connected to ReaSnow S1? please provide the specific model and producer.
PS: All peripherals should be connected to ReaSnow S1 first, before connecting it to a game console.
6. Do you see any indication on the screen of your console during the trouble?
7. which config has been activated in ReaSnow S1 when you are facing this trouble?
8. a video to show us your trouble
please upload the video to youtube or other file-sharing servers, and send us the URL.
And the following might also be some help for you:
ReaSnow S1 Quick Guide
https://youtu.be/CFdJpR5Zj0AWarning and Solution
http://www.reasnow.com/download/ReaSnowApp/Warning%20and%20Solution.pdf