I have a client who's in a situation with her website: her ex-husband owns the hosting company and won't let her have FTP or any other server access, she still has dashboard access, she wants to move the site to another hosting provider, and the site is on version 3.5.1. - hasn't been updated since 2013! Same with the plugins, of course.
Normally I'd install Duplicator and let it do its thing, but since the WP core files are so old, I'm unsure of the best way to proceed. I'm thinking of finding a version of a backup plugin contemporaneous with the version of WP, installing that and backing everything up/downloading it all, then updating the WP core to current, then installing Duplicator. Is there a better way to proceed?