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First, have you told CC about the columns? Go to Settings, Marking books read, Sync column for read and ensure that the lookup name there matches the one in calibre. Same for Sync column for read date if you are using that.
As for the grouping drawer, the "Read" group should be there. If it is not, go to CC's Grouping drawer settings, choose Select groups to show, and ensure that Read is selected.
If all of these are OK, and given that you are running CC in Spanish, there there might be some issue with translation where I used a translatable term where I should have used a fixed term. To test this, try switching CC to English and see if the problem(s) go away.
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