urgent request

I have hikvision DVR 7216 which connected to the internet through Mikrotik (RB951G) (its IP 192.168.88.1) , and the Mikrotik connected to the internet via outdoor antenna (its ip 192.168.88.1) . The ISP doesn’t have a public IP, that’s why I enabled DDNS (HiDDNS) to be able to access my DVRs from the internet.
the problem is even when I tried to port forwarding my ports and checking them by http://canyouseeme.org/ website , it tells me that thr ports not open, and I can’t enter to my DVR remotely over the internet.
once I try to enter to my DVR by typing the URL in my browser http://eu.hiddns.com/??? give me the following message
This site can’t be reached.
I went to my ISP and he port forwarded the ports that I assigned to the http and server port in my DVDs and he told me that every thing is OK , but when I tried to port forwarded my routerboard by (ip-firewaal NAT - GENERAL - add chain -dstnat protocol tcp des.port the port assigned in my DVR ACTION dst-nat to address ( the ip address of my DVR to port (the port assigned in my DVR) NOTHING CHANGE…even when I try to enter to my DVR IP address with new port locally , I should writhe its IP followed by colon and port No. .

is there anyway can I reach my DVRs remotly over the internet
thanks in advanced , hope to help me out solve this problem

try p2p ezbiz cloud service from hikvision, may be you need to update firmware on dvr to enable it, some times only from mouse connected directly to dvr you can enable this service