* removing redundant word 'only'
When applying a filtering option, it is obvious that the resulting list will ONLY contain items that passed the filter. The remaining filtering options don't make use of the word 'only', o why use it here?.
* positive wording
These filtering options contain the word 'no' and may sound negative. Changing them slightly to achieve positive wording may improve UX.
* The label 'single from operator' may sound unclear, especially for new users. Maybe being a bit more descriptive with 'one validator per operator' could help.
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