Wrong statistics (Not working) after update on latest Version

Is mystery but the statistics for User Registrations is not working correct after update to the latest version.

Burning Board® Version 4.1.13
Community Blog™ Version 2.1.6
Bugtracker-version 2.1.1 pl 1
Infinite Filebase Version 3.1.1 pl 1
voolia News-System Version 1.0.5
Community Marketplace-Version 1.1.4 (Bifrost)
Community Gallery™-Version 2.0.5
Community Calendar™ Version 2.1.5
VieCode Lexicon Version 5.2.3 pl 1
EasyRating Version 1.0.4 pl 5
Community Framework™ Version 2.1.13 (Typhoon)

Server

Operating System Linux
Webserver nginx/1.11.4
PHP Version 7.0.16
MySQL Version 5.5.5-10.1.21-MariaDB
Current UNIX Load 0.39, 0.44, 0.5

Always shows only 2-3 registrations per day and I have more than 60-80 per day.

I have to go on maintenance => Rebuild statistics every time to get the correct numbers.

I have no errors in logs and all Cronjobs seems to working fine.

Thanks in advance for your help.

Dimitris...

Hmmm....

Dancing on my own....

No response yet - no suggestion

I hope at next 24 hours to have at least an answer...

Until then, I have to go every night to ACP => System => Maintenance => Rebuild Data => Rebuild Statistics...

I was tooo lazy lately, and I found a new work to pass my time every night...

To be honest I was never thought this way .....

You have Right my friend.

I will wait 48+ hours to see the correct statistics after the cronjob do it by auto.

Now, I must find an other job, to pass my time late the nights.

At least I have to take daily backups in server....

Thanks for the answer...

Yeap ....

Case closed.

My Bad,

Registrations per day are ok ...

And traffic stats...

All are ok.