Find your management link
A management link belongs to one listing, so there is no general one. Yours is in the email you received when you paid, under the subject Your place is live. It does not expire, so the email is worth keeping.
If it is gone, write to k@ecomapps.store from the address on your receipt and we will send it again. There are no accounts here and no password to reset, which is why the link is the whole of it.