Hi, this is just how JavaScript works. Each time you refresh the page or load a new page, the JavaScript on the page, including the slideshow, is going to start over from the beginning, it has no way of remembering what happened on a previous page load and normally you wouldn’t want it to.
If you want something to be persistent from page to page, like a music player, you would use AJAX or something to switch the content of the page dynamically without actually loading a new page. Like a one-page website.
This would be overkill for what you are trying to do, unless you literally have one page with different sections of content and use the nav for anchors to those sections.
Instead I would recommend using less slides and have the slideshow on just the main page. Slideshows are a nice touch to polish up a website, but you can’t count on visitors to look too closely at them and to view more than a few slides. So if you have a lot of slides, or a lot of content on the slides, that content can easily be missed by your visitors.
If you have just a few slides on the homepage, you can more confidently expect them to be seen. And then on the other pages you could include different slideshows, or static images or text that is relevant to that page. This will allow you to carefully manage the content and ensure that it is visible and has an impact.
