# Connectivity issues

## Slow speed

* Try connecting to a different server. Some servers may not be available on your provider. It all depends on your location. \
  Try to choose servers that are as close as possible to your current location.
* If you are not in China, try using any of the European servers OR the closest server to you (e.g. FI, DE, GB).
* **Turn off your router** from the network, wait for about 3-5 minutes. **Turn it back on**. This method of "rebooting" the router will update the IP address and reset the router cache.
* Reboot the device from which you are trying to connect to the VPN.

## ChatGPT is not working

ChatGPT prohibits access from most of our servers. 

We have specially added servers in Poland and Finland, as well as some Hong Kong servers.

{% hint style="warning" %}
**Pay attention!** 

You need a phone number from a permitted country to register. If you need help with registration, you can [**contact our support team**](/en/support/contact.md)**.** \
After authentication in the chat, you can choose any other server.
{% endhint %}

## Subscription not updating

Make sure you are disconnected from your VPN! 

On Windows, iOS, and other devices, this is necessary to update your subscription. 

**Instructions for updating your subscription:** [Update subscription](/en/u/update.md)

## VPN working for 5 minutes and then stop

{% hint style="success" %}
**If you have an Android device**, make sure you have disabled power saving mode. 

If not, go to Settings > Apps, find ZGC VPN, enable auto launch and disable power saving mode. 

If this doesn't help or you have a different device, try rebooting the router or device.
{% endhint %}

## Calls are not working on WhatsApp for iOS

{% hint style="success" %}
This is easy to fix. 

* [x] Open the **ShadowRocket** app 
* [x] At the bottom right, click on Settings 
* [x] Open the UDP section 
* [x] Turn off the Enable Relay setting 
* [x] Connect to the VPN and now calls should work
  {% endhint %}

## I still have questions..

### Live chat and technical support

{% content-ref url="/pages/ca1QR1KyXk32slQ7Z3r5" %}
[Contact support](/en/support/contact.md)
{% endcontent-ref %}


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