I have compiled a new beta version with driver fix..
This should work, please test and give feedback.
domoticz_rtd1296-6.2_3.0.9541-7.spk

Oh yes it works perfectly! Sooooo fast! I thank you so much !!

@jumbotroll

I'm using DSM 6.2-23648 on my DS918+. The kernel is
Linux DS918 4.4.59+ #23648 SMP PREEMPT Sat Mar 17 02:57:07 CST 2018 x86_64 GNU/Linux synology_apollolake_918+

With the latest domoticz_apollolake-6.2_3.0.9317-7.spk the serial modules wont load:
cp210x: version magic '4.4.59 SMP ...