# 3. Purchasing process

<figure><img src="/files/fGYUuuNkCY40hUnp2gma" alt=""><figcaption></figcaption></figure>

* In the left column of Synertech → Buy, select the product you want to purchase and paste the CSR
* ***＊Note***

  ***When the CSR is generated, the Key will be generated together and needs to be kept by you. If the Key of this domain name is lost, the risk will be borne by you.***

<figure><img src="/files/RueRCvrDqAkxMtzhvYv5" alt=""><figcaption></figcaption></figure>

```jsx
In Verify, you can see the details of the certificate, including `Certificate Name`、`Purchased Product`、`Cost`、`Validity Period`.
The information provided by CSR itself can also be confirmed here
The main authentication methods are `CNAME Authentication`, and the other Http authentication method is more complicated.
```

<figure><img src="/files/rpVICK8ftlfCzhP2XRXR" alt=""><figcaption></figcaption></figure>

```jsx
After confirming that the certificate information is correct, you can directly Confirm this Order. 
Subsequently, you will receive a set of random Hostnames and Aliases (point value).
```

<figure><img src="/files/MYhZJoZlzDMD6kU8bMMy" alt=""><figcaption></figcaption></figure>

* After the order is generated, you need to go to the DNS platform yourself to perform the pointing.

```jsx
Point the provided random Host and random value to your own DNS platform (use Cname record).
Return to Order Listing and you can see whether the Order’s Status can download the certificate.
```

```jsx
If the certificate has not yet been issued, after confirming that the Cname resolution of DNS points to the value provided by the platform, you can click `Check SSL ready to Collection` and a verification request will be automatically sent to `Sectigo`.
```

<figure><img src="/files/B81tgvDSJWLluIghAjqG" alt=""><figcaption></figcaption></figure>

```jsx
If the verification is not successful, an error will pop up.
```

<figure><img src="/files/ovOCeu451qo0IUBcvrem" alt=""><figcaption></figcaption></figure>

```jsx
After repeated confirmation, the certificate will be automatically downloaded if the verification is successful.
If it is not downloaded, you can also click `Download` manually.
```

* After downloading, the certificate needs to be extracted first.
* There will be two certificate files inside (certificate.zip and combined.crt)
* combined.crt → The certificate file after Sectigo automatically combined
* certificate.zip → We also provide the certificates that have not been combined yet (after extraction, there are four certificates, including "one domain certificate", "two intermediate certificates", "one root certificate")

<figure><img src="/files/4Hss0K1wyYZnkiA7Ir1x" alt=""><figcaption></figcaption></figure>


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