There is nothing we can help you with. See the following from Adobe. The limit is different for each contributor, dependent on factors we have not been informed of. When some of your 19 assets have been reviewed, you'll be able to upload more.
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We’re introducing updated submission limits for Adobe Stock Contributors to help maintain the strength and quality of our growing collection. These updates support the continued success of both our Contributor community and customers alike. When you reach your weekly submission limit or the maximum amount of allowed content pending moderation, you will experience a temporary pause before you can submit additional content."
Adobe Community Expert | I have miles to go before I sleep, but I'm all done on this end.