Nothing to worry about; crash is just a trendline test.

2020年5月10日The 5/9 flash crash bottomed perfectly at the resistance-turned-support yellow trendline. Strong buying at this point indicates further upside. My personal feeling is the crash was just whale selling in an effort to shake out stop-losses and gobble up more coins pre-bull run.
https://www.tradingview.com/x/9eeawC9A/