What firmware do you have deployed?
The SSR1PCB is compatible with the ESP32-WROOM-32E modules, sometimes listed as devkit-v1.
Both the firmware on the Millibyte Github and TCodeESP32 support the SSR1PCB.
Though you should follow the complete SSR1 assembly instructions as the board isn’t designed to control an unmounted motor.
A crash loop is likely due to insufficient power, incorrect firmware version, or conductive debris contaminating the board (clean with a nonconductive cloth or brush).