I don't know why you think it uses a rolling code. If the seller told you that, then, well, they lied.
EV1527 is a very simple encoder. No rolling/hopping code, it just sends a preamble, followed by a constant 20-bit transmitter id, and 4 bit button id. With around 1 million possible transmitter ids, the receiver typically has to "learn" the code(s) for trusted transmitters, which results in them sometimes being called "learning code" remotes, but they are essentially just fixed-code devices.
I see plenty of inexpensive receivers for sale online that mention EV1527, but they seem to normally be sold together with one or more transmitters, making me wonder if they really use EV1527, or just something vaguely similar, that might not be compatible.
You could certainly make your own receiver, I'll bet you will find code to turn an Arduino and cheap RF receiver module into a decoder.
Or, if you can ditch it, and get real rolling-code receivers and transmitters.