AstroRelay vs GoodCloud

I can easily connect gl.inet routers to GoodCloud, however with AstroRelay is different.

Why isn’t it as easy to use /connect the routers to AstroRelay like it is with Goodcloud?

While GoodCloud’s remote connection is only used to access the admin web or SSH on the device itself, AtrsoRelay’s connection can access any service from any client on the device’s LAN or WAN network.
In other words, AtrsoRelay therefore offers more options, all of which are more complex to configure and more costly.