There is also a spring flap for the Stromer Racktime rack, as we know it from biobikes. The somewhat unwieldy name is Racktime adapter Clamp-it black, for the Light-it model.
There are different models of the spring flap that fit on different carriers. The Clamp-it 2.0 (for Snap it 2.0) is the successor to the Snap it and is not compatible with it.
Attention: Stromer models from approx. 2019) lack the center brace on the rack mounts and thus the locking point of the spring. This can be retrofitted relatively easily as a DIY or by a locksmith. When retrofitting, you must ensure that there is sufficient clearance between the retrofitted center strut and the mudguard so that the spring flap bracket can be pushed through.
Another option would be to anchor the retaining spring in the mudguard using a washer and a pop rivet. (Source: stromerforum.ch | Calli)
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