Your website data is not linked to the TI database, so whenever new members join, members take on officer roles or members leave, an officer with access to the Membership Management module of the website needs to update your club website data too. Details on how to assign officer roles can be found here:
support.toastmastersclubs.org/doc/item/m...-panel#officer-roles
Currently there is no VPM registered on your website, hence no details show on the officer list.
Members with access to Membership on your website are the President, VPE and website admin (as listed in your website screen shot), so any one of them can make the changes. Your VPM role also has access, even though there is no VPM. Once you have been assigned the VPM role, you will have access to Membership Management