After install and setting Nginx Free Firewall my web ERR_HTTP2_PROTOCOL_ERROR

my web can't access after install and setting Nginx Free Firewall

"ERR_HTTP2_PROTOCOL_ERROR"

Note : After set Frequency = 1 on CC defense from Global Setting and Site Setting

aaP_insanalhikmah
Already reply to other posts. Please check the blockade record. The frequency of access is too small