Pre sites register have problem ,price table and sites word colour / backgrand error

Dear Sir,

Happy New Year to You!

1.The sites register show not right, or can not register, price table and sites word colour / background error, for multi sites and multi domain plugins can we not use blog MU themes, use Avada theme is OK.

2.If use Avada themes for main site, can we use upfront for other sites in the network system? but looks will have problem for home page.

3. Pre sites plugin, if plugins and themes need pay fee, should NOT active in the network system. If free should active in the network system, right?

4. Tried many time if active woodcommerce, home page and register will not show full.

how to fix it?

The sites support access is on.

Thanks!