Most probably CPANTS databases are being regenerated from scratch due to major changes in Kwalitee metrics or updates of relevant modules/perl. Usually this maintenance takes about a day or two, and some of the information may be old or missing tentatively. Sorry for the inconvenience.
Take a look at the META.yml Spec at https://metacpan.org/pod/CPAN::Meta::History::Meta_1_4 (for version 1.4) or https://metacpan.org/pod/CPAN::Meta::Spec (for version 2), and change your META.yml accordingly.
Error: '' for 'license' is not a valid URL. (resources -> license) [Validation: 1.4];License 'wtfpl' is invalid (license) [Validation: 1.4]
Add a README to the distribution. It should contain a quick description of your module and how to install it.
Use a proper tool to make a distribution. You might also need to fix META files if you keep them in the repository.
Error: Acme-ÇmÉA
Change the permissions of Build.PL/Makefile.PL to not-executable.
Rename those files with alphanumerical characters, or maybe remove them because in many cases they are automatically generated for local installation.
Error:
Provide a short description in the NAME section of the pod (after the module name followed by a hyphen) at least for the main module of this distribution.
Make sure that the main module name and version are the same of the distribution.
Add a META.json to the distribution. Your buildtool should be able to autogenerate it.
Add =head1 LICENSE and/or the proper text of the well-known license to the main module in your code.
Add 'use warnings' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.
Error: Acme::ÃÂmÃÂA
Add all modules contained in this distribution to the META.yml field 'provides'. Module::Build or Dist::Zilla::Plugin::MetaProvides do this automatically for you.
Add a 'repository' resource to the META.yml via 'meta_add' accessor (for Module::Build) or META_ADD parameter (for ExtUtils::MakeMaker).
This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.