Clashes with UpdraftPlus backup authentication to Dropbox

This plugin prevents authentication to Dropbox of the UpdraftPlus back up plugin. The author of that plugin says “You should report it to the authors of those plugins. The culprit is loading a Dropbox library when it doesn’t need to use it – which then causes the problem when another plugin (in this case, UpdraftPlus), does need to use its own Dropbox library.” (https://wordpress.org/support/topic/cant-authenticate-to-dropbox).

Sure enough, disabling Photo sideloader enables the authentication to proceed. By all accounts re-enabling it will prevent the authenication again, so I can’t use this plugin.

Since it has not been updated from v0.6 for over 2 years, I somehow doubt if this will get fixed, but who knows?