How do I export WordPress posts and comments… in an alternative way?

my mom's blog after 10 years of writing (so manual copying is close to impossible) has been moved by its platform provider to WordPress. We'd like to use our own WordPress instance, but provider of the old one made WordPress unusable by disabling loads of options, so we neither can use default export option nor use a plugin to do so.How do I generate XML in this blocked WordPress instance so I could move all the data on our own WordPress instance?Thanks in advance!
 
Top