Algorand Inc put in place a new process to validate ASA in the official Algorand wallet:
https://form.typeform.com/to/Dphf11p6
Note that this validation process is independent of the validation process on algoexplorer.io. If you want your asset to be validated on algoexplorer.io, contact Randlabs via Algorand (ALGO) Blockchain Explorer
Finally, if you are planning to create an asset/ASA, we strongly encourage you to follow one of the two official standards for assets on Algorand: ARC-3 or ARC-69. All ARCs can be found there: GitHub - algorandfoundation/ARCs: Algorand Requests for Comments