The BM Content Builder button has disappeared. I have a similar question and have tried the solution but it did not resolve the issue. I reinstalled and updated the plugin.
Please help.
====
If it doesn’t work, May I check your website? Because I need to check the live website, it is a faster way to solve issue normally.
If you permit, please leave your wp-admin access (URL / username/password) to via picking up ‘Set as private reply’.
We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies.
This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
.
WordPress Customization Service from 
