I have installed simple press on my site but when I activate, it says : “Plugin could not be activated because it triggered a fatal error.” and the fatal error is : “Fatal error: Maximum execution time of 30 seconds exceeded in /home/collabor8.life/public_html/wp-includes/functions.php on line 6286”.  How this specific problem can be solved?

I have asked this question to WordPress support and they said it doesn't support multi-site network. But I have read it supports both. Does premium plugin also don't support it?

Hello:

Simple:Press V 6.x does not activate on Multisite networks.  

There is recent code committed to the github repository that will support that but it's not released yet.  If you would like to, you can try them out - you can grab the files from the development branch located here: https://github.com/Simple-Pres.....s/tree/dev.  

Thanks.