Make a backup (files/database) before making any change.
There are several ways you can handle that:
– Recreate the current website locally in your computer, disable the plugins and try upgrading the WordPress version
– Start a clean WordPress site
Get a backup copy of your page
I’ll advice you take this as a project and rebuild your network of language sites from the ground up, the proper way.
Uising a good multilingual site plugin should allow you to maintain all three language sites using just ONE standard WordPress installation, instead of having to maintain 3 different installations.
This approach will also let you have automatic context-aware language switchers (eg in you’re on the CONTACT page in Swedish website, clicking the POLISH flag should taqke you to the CONTACT page on the POLISH site, instead of taking you to the homepage of the Polish site).
Review various translation/multilingual plugins: https://wordpress.org/plugins/search/translation/
Setup a new site “offline” with the latest version of WordPress in your host’s staging environment (if any) or on your local computer (using something like Local WP) with what you consider your primary site as the base.
Then installl one multilinigual plugin and re-build your 3 langauge sites to your heart’s desire.
You may even want to take the opportunity to refresh your site’s design š
When you’re done, you can then move the “offline” site LIVE to replace your three saparate WordPress installations.
Yes, it’ll thake a lot of time and effort to do this. But you’re building a solid foundation that will make managing y6our three language sites (and any additional language site you may add later on) a whole lot easier, while giving a far superior user experience to your site’s visitors.
Good luck!
Thank you very much for your answers.
The thing is, I only have admin rights for the German and Swedish pages. I can’t touch the main page (Poland). Some of the contents are also very different.
Tanja
Oh, so is it a multisite?
