You can always upgrade your Workstation by spending some extra Gems, even if you have not yet collected enough pearls & replicate cards. The process is the same whether you are short of Cards, Pearls, or both: tap on your Workstation button located on the bottom left of the main game screen.
Upon entering the Workstation Menu, tap on the green button of the relevant Workstation in question.
Upon entering the Upgrade menu of the specific workstation you will find (A) the rate of profitability increase upon making the upgrade, (1) the number of cards required (as evidenced in the above image you are lacking the appropriate number of cards) & the number of Pearls you need for the upgrade (2). In this instance, you have the right amount of Pearls so tap on the Upgrade button.
You will be prompted by the ‘Upgrade Confirmation’ window which highlights the number of cards you will get in exchange for Gems. Tap on the green buy button.
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