@Topper My problem is I'm familiar with PHP, SQL and E107 which I have been using for the last 13 years. NPM , MongoDB and modern forum scripts like nodeBB these are things like "black box". I've uninstalled plugin and dependencies then installed only plugin. Looks like dependencies installed manually was my bad idea
Now the log says:
warn: [plugins/load] The following plugins may not be compatible with your version of NodeBB. This may cause unintended behaviour or crashing. In the event of an unresponsive NodeBB caused by this plugin, run ./nodebb reset -p PLUGINNAME to disable it.

• nodebb-rewards-essentials
• nodebb-plugin-dbsearch
• nodebb-plugin-custom-pages
• nodebb-plugin-ns-embed

....but now i can see ACP menu.

I'll try tonight to see if it works as expected. By the way, I will also see the problem with the PDF embeding you write about.

thanks for Your help and suggestions !!!

Hello everyone.
I'm trying to migrate my website/forum from e107 to nodebb but i can't handle two things.

First is the ability to use HTML only for administration.
I am familiar with the topic "Allow admins to add custom HTML to composer" and also found issue #1149 on Github. According to the Github issue were "closed this as completed in NodeBB/nodebb-theme-vanilla@4eb96c1" but I don't see anywhere an option to use HTML for admins. Was trying with Vanilla theme and there isn't also. There is only "Allow HTML" in Markdown menu but it applies to all users.

Second milestone for is using IFRAME inside forum posts (goal is to embed time-series from Grafana). Was trying to add different plugins but no success.

• nodebb-plugin-iframely - after activate, nodeBB won't start
• nodebb-plugin-iframe-resizable - no any additional options in menus and composer after plugin activation
• nodebb-plugin-iframe - same as above, no any changes after plugin installation/activation and rebuild/restart

Can someone help with above ?

My nodeBB V2.6.1, npm V8.19.2, OS Deb10