A small catelog of known issues on Vine. These are things that do not work the way you would expect, and may be fixed in future updates.
Products may display that they cannot be ordered due to "local delivery restrictions". In some cases, users may be able to send to a different address to circumvent this error.
Users reported that they have been demoted to silver even when at 90%. This is likely due to the percentage shown on your account page being rounded up (ie you are below the required 90% but it rounds up and shows 90). Try to be over 91% during your review date, to be safe from this issue.
In case you have been demoted by mistake, try to request customer services to re-evaluate. Users reported being successful contacting customer service for re-evaluation.
If you order something it will show on your orders page forever, even if it is canceled and removed from your review queue/ETV.
When you edit a review that is pending approval you won't see your changes in case you open it again after resubmitting. But, it does apply the edit.
This occurs when a seller combines multiple listings you've submitted reviews on. Multiple reviews from one person cannot be displayed on the same listing, so Amazon removes all of the conflicting reviews.