Here's what's the fuss about: (quote from Typora, emphasis mine): I cannot activate Typora Error message “Please input a valid license code” Please check if y

Here's what's the fuss about: (quote from Typora, emphasis mine): I cannot activate Typora Error message “Please input a valid license code” Please check if your license code is valid or not, license code are using formats like XXXXXX-XXXXXX-XXXXXX-XXXXXX with uppercase letters and numbers. If you forgot your license code, please refer “How to retrieve my license code if I forgot it ?”. Error message “Email address confirmation does not match” Because once you used a license code, same email address MUST be used for the same license code in future activations. So you will need to input email address twice for confirmation. If those two input is not the same, this error will shown. So please check and correct your email address when met this error. Error message “This license code has been used with a different email address.” Because once you used a license code, same email address MUST be used for the same license code in future activations. This errors shows if the email address you use did not math the email address that that has been used when activating Typora with the license code at the first time. Error message “Failed to access the license server. Please check your network or try gain later.” Activation Typora requires network connection