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- Go to the Blau website: Visit https://www.blau.de/.
- Log in or create an account: Sign in to your Blau account or create one if needed.
- Navigate to the “Top-Up” section: Go to the section where you can recharge your Blau account.
- Enter your mobile number: Input the Blau mobile number you want to recharge.
- Enter your recharge code: Input the recharge code from your Blau voucher in the provided field.
- Complete the recharge: Follow the prompts to apply the recharge to your Blau account.