The earlier plug-in version before November 2020 has been deprecated.
The new source code has been updated as Profile-Input-Fields-V2.zip
Profile-Input-Fields-V2.zip
The previous code version is not compatible with this new version as they both use different custom tables
The previous version 1.0 profile input fields plug-in is no longer compatible with the Arcadier marketplace platform
Do take note that your marketplace domain has to be secured as the latest browsers (Chrome, Firefox, Opera) now block cookies on the client side for non-secure domains, which causes issues on getting the user tokens which affects the customisations.