Is there any reason why the LPM ip core (once included in quartus 15.1) is not available in Quartus 18.1?

Hi Vuk, For your information, as I look into https://www.intel.com/content/www/us/en/programmable/documentation/sam1395330298052.html, it seems like lpm_counter is not supported in S10 devices. As a workaround, you mind need to look into coding the counter using your own logic. Sorry for the inconvenience.