Here the answer zo question number one:
There is a possibility to find all cards that are no longer available from the catalog (Girls Store).
Click on the "My Collection" tab.
Disable all sub filters of main filter "Display".
Activate all sub-filters for all remaining main filters.
Click in the main filter "Release date". Deactivate all subfilters with a year.
Only the sub-filter "Unknown" must be activated.
The cards now displayed are the cards that are no longer available.
NOTE for users who bought the advent calendar:
One or two cards from the Advent calendar can be displayed. These cards are already visible here before the release date.
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There is a simpler way to search only for the cards that are no longer available. The following search string can only find the cards that are still known today.
Select one of the search strings and copy it into the search box.
Search string (short version)
a(0(09[6-9]|100|2(4[4-8]|5[5-9]|60|7[6-9]|8[015])|3(19|20|89|9[0-4])|64[678]|819|820|821)|137[2-7])|d0252|e07(5[789]|60|61)|f0222
Search string (long version)
a0096|a0097|a0098|a0099|a0100|a0244|a0245|a0246|a0247|a0248|a0255|a0256|a0257|a0258|a0259|a0260|a0276|a0277|a0278|a0279|a0280|a0281|a0285|a0319|a0320|a0389|a0390|a0391|a0392|a0393|a0394|a0646|a0647|a0648|a0819|a0820|a0821|a1372|a1373|a1374|a1375|a1376|a1377|d0252|e0757|e0758|e0759|e0760|e0761|f0222