error 404 and configuration of gatsby seo plugin

[manang]

Hi,
I'm trying to use this plugin within my project.
Every singlepage webapplication generates an error 404 before landing on the right page. I solved this configuring apache2 to redirect the connection, if the error 404 occurs.
The problem is that the url of this page is dynamic and I need to fill the template of gatsby seo accordingly to this.
for example, before the redirect, my url is https://website/page/dynamic-parameters.
After, the connection is redirec to to https://website/page
how can I manage this with gatsby seo? in the head the parameters are not modifiable, and the locator variable is euqual to https://website/page and not to https://website/page/dynamic-parameters.
(https://stackoverflow.com/questions/52051090/gatsbyjs-client-only-paths-goes-to-404-page-when-the-url-is-directly-accessed-in)

Thanks a lot for your help
Angelo