Links doesnt work anymore

Today i′ve noticed that every link to eventim events landed on

https://www.eventim.de/?affiliate=ZEE&utm_campaign=351173&utm_medium=affiliate&utm_source=awin

if i switch off the plugin the linking is correct, but of course without the awin publisher master tag.

Tested with different browsers with latest wp version.

so far the links have been fine in the last few years

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