I am also unable to add new users or share my project with new users

[Kal_Lam]

Welcome to the community, @aprcglobal! Maybe this post discussed previously should help you solve your issue:

Username not found while trying to share projects with other users

Hi @carloponzio, Welcome to the community! Kindly please be informed that KoBoToolbox has 2 servers viz. the OCHA and the HHI. Please be informed that sharing of project is only possible within the same server i.e. either within HHI server or within OCHA server. It’s not possible to share a survey project from HHI to OCHA or vice versa. You could also have a look at our support article MANAGING PERMISSIONS to learn more on sharing projects with other users. Have a great day!