Vbulletin and text-link-ads plugin problem

Hi people,

Does anybody here have problem to install the plugin of the text-link-ads in the vbulletin?

I always receive the error message below:

Service Temporarily Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

But this message is fake and not is problem of the plugin and/or vbulletin.

Any idea/solution? Thank you

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