You're using a pirated copy of FL, which I'm going to assume is out of date.
VST3 support has come a long way in the last couple years, and a lot of these errors no longer happen IIRC.
It was pretty common to see vst3 plugins do this in the past
#1 plugin(s) could not be opened (RF-SoundFont)
cyan elbow
cloud spade
You're using a pirated copy of FL, which I'm going to assume is out of date.
VST...
oh, my friend sent me this copy of fl
maybe i'll try to save my money for fl producer thing
cloud spade
You're using a pirated copy of FL, which I'm going to assume is out of date.
VST...
my friend has an older pirated version and this doesn't happen to him