Unable to install or activate license

I made it to step 2 in section B.

B. License your vBSEO instance:

1. CHMOD 666 the 'vB-root/includes/config_vbseo.php' file.
2. Using your browser, visit: http://www.yoursite.com/vB-root/vbseocp.php

After running the last command I get the below error.

Code:
Fatal error: Function name must be a string in /home/content/e/c/o/ecoforumz/html/vbseocp.php on line 680
Line 680 in vbseocp.php


Code:
$vbseostore = $db->funcs['fetch_assoc']($rid);

Please open a support ticket with ftp access for troubleshooting.

Fixed and installed. Thanks for your quick response! I installed it and everything on my site still seems to work with no problems.

So how do I know if vBSEO is working or not? Is there something I should check or should I just have faith?

Thanks again!

Just check that URLs are rewritten on your forum.
Also, make sure to install our vBSEO Sitemap Generator: https://www.vbseo.com/downloads/