Is seller plus feature beneficial? I just lost my ranking few days ago without any cancellation etc

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I just have the seller plus beta feature , before purchasing the subscription i just wanted to ask is it beneficial? Like can i get all my gigs back with this? with proven results as the information video says that it multiplies the revenue etc. My gigs were doing fine and then suddenly all got dranked without any cancellation etc and even  my promotional gig feature is also deactivated. What i have observed is when i have the promotional feature the gigs are ranked and when it is deactivated it results in gig d ranking too. so should i go for seller plus? I look forward to your suggestions and experience! Thanks in advance.