Hello! I see you're experiencing an issue where after getting about 5 MBit speed for 5 or 6 days on your Yesim unlimited plan in Spain, your internet has now stopped working completely. That sounds inconvenient—let’s see if we can sort it out together.

First, just to clarify a few things:
- Are you still in an area with good cellular coverage in Spain?
- Have you tried restarting your device since the internet stopped working?
- Is your Yesim eSIM profile still active and properly installed in the Yesim app?
- Has your app or device displayed any error messages or warnings related to the data plan?

Knowing these details will help narrow down the cause.

Meanwhile, I can guide you through some initial troubleshooting for Yesim data issues:
1. Restart your device to refresh cellular connections.
2. Open the Yesim app and check the status of your eSIM profile, ensuring it says “active” or “connected.” Sometimes the profile might get deactivated.
3. Verify that your unlimited data plan has not expired or consumed any fair-use limits that might throttle or suspend the data. Even “unlimited” plans occasionally have restrictions or technical caps after certain usage.
4. Check that mobile data is enabled in your device settings and is prioritized over Wi-Fi if you’re trying to use cellular data.
5. Toggle airplane mode on and off to reset your network connections.

If after these steps your internet remains down, it might be worth checking if there’s a known service outage or contacting Yesim support. Unfortunately, you mentioned there is no support available, but sometimes you can reach them via their email support address or through the app help sections.

Here is a link to Yesim's own troubleshooting page for data issues which might offer some additional steps:
https://help.yesim.tech/i-cant-use-the-yesim-data-what-should-i-do/1

Please let me know what you find with these checks, and I can guide you further! Are you able to share any app notifications or error messages you’ve seen?