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Make sure to perform a clean reinstall of the Spotify app on your Huawei device since this will remove any corrupted files and cache issues that might be preventing the app to run properly. Here you can find the steps on how to do this.
If you see no change after this, try disabling any power saving or data cleaning settings on your device. Alternatively, you can try authorizing Spotify to run without restrictions despite the mentioned settings being enabled.
Another thing you can try is restarting your Internet connection device (modem or router). Such issues can also be caused by connection dips.
If it doesn't help, check if you observe the same under a different network. If it works with another connection, it's best to contact the service provider of the original network for more information. For example, some shared or public networks (e.g. schools/work/office) might restrict access to certain services, which would explain what happened here.