This page explain what is the Error 429 and how to resolve it.
Too many login attempts (Error 429)
When login into the launcher, the following message appear:
Too many login attempts. Please wait and try to login later - (Error 429)
This is a general error which can affect the given account on the Substance website as well. This error appear because there were too many attemps to log into the specified account from the same IP address. For security reasons, the amount of login is limited per day and if this limit is reached the error appear. We usually recommend to wait and try again later. This issue may appear when sharing a common IP address across computers, like in a local network in a company or with a public IP address.