Wrong Blog URL on Multisite

Trying plugin on a multi-site blog where blogs are set up by directory. The search plugin (bottom left “license”) for https://splot.ca/collector/ returns results to the main blog, e.g selecting CCO returns

https://splot.ca/?f1=cc0&wpcfs=wp_custom_fields_search-3

where it should return

https://splot.ca/collector/?f1=cc0&wpcfs=wp_custom_fields_search-3

My guess it’s a site_url issue have not peeked at code yet.

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