Variations not working and showing slug

Hi, first of all i am shocked with how hard it is to set up product variations, all i want is to have my base product at a set price, in my case a printer, and have the option to add extras on top for a fee, in this case;

Utax Lp3130 = ￡192.11

Extras
250 sheet paper tray (+￡100)
Network card (+150)

So if the customer chooses to buy the paper tray and network card the total price will be;

Base price (￡192.11) + Tray (￡100) + NetCard (￡150) = Total Price (￡442.11)

If the customer just selects network card the total should be (+￡100)

Unfortunately the product variations do not function correctly, if i have more than 2 attributes on one product the drop down only has “Choose option” and no variations. I did get it to show at one point but the price did not change accordingly rendering it useless. I have managed to create a attribute and assign the variations to this product:

https://i4-businesssolutions.co.uk/product/lp-3130/

As you can see it works, but is not ideal as its really lengthy to set up! i repeated the same steps to create variations for a different product, following the exact same steps, but on this one the text shows as the attribute’s slug, i am really confused, anyone got any tips or solutions? Even better a free plugin? haha

Example of slugs
https://i4-businesssolutions.co.uk/product/lp-3135/

Thanks

Liam

https://www.ads-software.com/plugins/woocommerce/