Like i got 80$ free credit from a cloud website of deepseek i am getting eror in adding it to deep seek api in bt.diy

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so i found a website where if you ragister you got 20$ free api here is link if you dont know Give $20, Earn $20 In DeepSeek API credits
the error was like i have to add this provider into bolt.diy but i cant if you know pls tell me