Dear Sir,
Its most likely that you have setup the VPN server to use the IPsec or IKEv2 protocols based VPN solutions.
Since Dubai has tightened its ISP controls, many VPN are getting blocked or running with very slow bandwidth.
Have you tried also adding SSL VPN feature to your Anyconnect VPN services, it might bypass the UAE governmental restrictions.
Also, changing the encryption technology and key
sizes might also help you bypass the government restrictions.
I have not worked with Cisco ASA devices, but have experience configuring the Site to Site VPNs and Client VPNs using WatchGuard, Sophos, SonicWALL.
If you have a GUI based setup like the Cisco ASDM on your Cisco VPN Server, then I can check and solve this issue for you soon.
If given the opportunity, I will attempt to successfully solve this issue at the earliest.
For further clarification/discussion, please message me via the Freelancer chat app.