Availcheck Calendar Admin

Availcheck Calendars problem

We're really sorry but your Availcheck Calendar for "Holiday Lets Availability"
has received 136 hits so far this month.
Free Calendars are allowed a maximum of 120 hits in any month.
This calendar may have reverted to the Free version if it was previous Upgraded but now shows this message

To ensure your calendar is still working towards the end of each month then please Upgrade it NOW.