[WARNING] This WXR file (version 1.2) is newer than the importer (version 1,2) and may not be supported. Please consider updating.
What should I do?
I can provide you credentials but I installed again my old theme because my customers are still visiting my site and I will install your theme during the night once this problem is solved.
The warning is coming from the WordPress Importer plugin, can you please check and ensure that your WordPress core and WordPress Importer plugins are uptodate?
Please DO NOT post your wp admin details on community section. Send them only when we request it via private ticket only.
You are getting the errors because you are using really cheap outdated hosting. Please see this post to resolve your issues:
Your Post Max Size, Upload Limit, SQL Version, everything is below the requirement! Even WooCommerce is showing you the RED WARNING about your mysql version. Please see below and share this screenshot with your webhost and ask them to upgrade things, or switch to a better webhost that offers proper woocommerce / wordpress web hsoting.
YOUR SETTINGS ARE ALL BELOW REQUIREMENTS AS SHOWN IN IMAGE BELOW: