Hi,
1. Will i have to deactivate plugin when updating theme by ftp?
>> No need to deactivate HMWP when updating theme/plugins/wordpress via FTP or backend.
2. How can i hide class attachment text & wp-post-image from source code? line 384,465
http://prntscr.com/iue3yx
>> You can add replacement like below in “replace in html” option under replace tools tab:
wp-post-image ==> somename
After adding the replacement please check your site and if anything breaks remove the replacement added.
More info – https://codecanyon.net/item/hide-my-wp-amazing-security-plugin-for-wordpress/4177158/faqs/20827
3. How can i hide wp powered by wp page bakery & slider revolution & woocommerce product gallery text? line 15
http://prntscr.com/iue7t6
>> add replacement for it like I mentioned above
4. Also want to hide style css text
http://prntscr.com/iue9j8
>> add replacement for it like I mentioned above
5. Will i have to deactivate plugin or delete plugin? when updating wp hide plugin or website theme to new version?
>> No