The amount of misinformation coming out of the WHO has been staggering and hard to account for, but I will stop short of suggesting any conspiracy.
* They held that there was no evidence of person-to-person transmission for far too long in the face of evidence out of China.
* They claimed for far to long that if you weren't showing symptoms you weren't contagious. This advice has been very widely used to not quarantine people who were exposed to a person who got sick shortly after interactions... to devastating effect around the world.
* They claimed it does not spread through atomized particles, only droplets. This has been demonstrated to be false by experiment.
* They said masks are not effective.
* They said you didn't need to cover your eyes. Medical staff now wear full face shields.
* They said travel bans don't work. This defies basic logic.
* They delayed declaraing the pandemic to be a pandemic.
* They've been completely silent about ACE inhibitors and ARBs upregulating the expression of ACE2 receptors, and that available evidence strongly suggests that people on these medicines have much more severe reactions to the disease. WARNING: I cannot say whether these drugs are the cause -- it may well not be the case -- but shoudn't this have been seriously investigated by now?