Is sending from exchange to exchange slower/riskier or something?
Yes at some of the cases to the point that it can be considered as unexpected bug. Already received on the right wallet address but doesn't reflected for viewing. Happened that several times to me on a small exchanges but after I notified the support, it reflected to my wallet later on.
I deposited some xrp (from wallet and exchange) into my bitforex account previously and it arrived pretty quickly. No issues whatever. I have never had an issue sending from exchange to exchange so i didn't anticipate something like this could happen.
You just need to extend your patience since previous transaction was smooth. No choice but to ask nicely the support even how mad we are.
I sent them countless emails and got crickets.
What do you mean by here literally? What responses you have received by now.
Hope this case will be solved. After that get out from that exchange.