Hi. For some odd reason doesnt the Heavy tanker connect to any pumps placed from below or above and are trying to pump stuff into the tanker. The output works totally fine. If the Save would be helpful for the fix, let me know.
https://prnt.sc/5mo5i8o-MrTG

Thanks for the report that.. it should connect as intended but i tested it myself and it's indeed the case i cannot connect anything not even original fluid-wagons.. it works flawless on 2.1 though. unsure if its like something to do with station position Or something.. i am trying to fix it.. will tell if it's fixed.. sorry for the issues
:Edit: it should been solved now in 0.4.5 thanks again

well.. it works at least sometimes..
https://prnt.sc/xsr20IlXtXgD
https://prnt.sc/7hRlqca7GkzU

Ok i think i got it working here. will update asap now..
:Edit: It was the connector for pumps that caused it hope it works now in 0.4.6