After finding the problem with mobile responsiveness, I tried to find the conflicting plugin and finally the block plugin issue (https://wordpress.org/plugins/blocks/). I am using the Enfold design and this is my website URL (https://aboutreact.com).
Not the problem is that I know the plugin, which is contradictory, but I've used this plugin from the beginning on my website and have used the shortcode of this plugin in almost all the blogs I have the speed dial. 🙁
Is there an alternative to circumvent the conflict?