Update README.md

Author: magefan

README.md

@@ -3,7 +3,9 @@
 [![Total Downloads](https://poser.pugx.org/magefan/module-blog-graph-ql/downloads)](https://packagist.org/packages/magefan/module-blog-graph-ql)
 [![Latest Stable Version](https://poser.pugx.org/magefan/module-blog-graph-ql/v/stable)](https://packagist.org/packages/magefan/module-blog-graph-ql)
 
-This [Magento 2 GraphQL Blog module](https://magefan.com/magento2-blog-extension) allows you to create a PWA Blog on your Magento 2 Store.
+[Magento 2 Blog GraphQL](https://magefan.com/magento2-blog-extension) module allows you to create a PWA Blog on your Magento 2 Store.
+
+Attention!!! If you use Magento lower then v2.3.4 please use BlogGraphQl extension v2.0.1. BlogGraphQl v2.0.2 is only for Magento 2.3.4 or greater.
 
 ## Demo