A seller can buy from fiverr his seller account ?
A seller can buy services from others. There should be an option from your dashboard on the top, like “switch to buying”. Clicking it you will be able to buy from other sellers
there will no other problem or violation about the TOS ?
If you are willing to buy a gig from another seller, no problem.
If you are going to promote your services then there will be a problem.
Thanks all supporting