BuyPass ACME Incoming (Existing?) Rate Limits

[hifocus]

See: https://community.buypass.com/t/m1yfby4/future-changes-to-buypass-go-ssl

The Buypass GoSSL service will be replaced with a new Buypass GoTLS service. (...)
When launching Buypass GoTLS, we will continue providing certificates for free – however with strict limitations on number of active certificates and rate limits. The main GoTLS service will be a paid service using a volume-based price model and improved features (e.g. support for wildcard) and higher rate limits.

While BuyPass did not give an exact timeframe, it would seem BuyPass is moving to a freemium model by introducing rate limits and restrictions on number of active certificate. I have recently experienced harsh rate limits upon applying for its certificate, resulting in limited success:

[Sun Apr 20 12:52:00 PM CST 2025] code='429'
[Sun Apr 20 12:52:00 PM CST 2025] original='{"type":"urn:ietf:params:acme:error:rateLimited","title":"Too Many Requests","status":429,"detail":"Too many validation attempts during last hour","instance":"/acme/authz/foSBzMcfSWyvDq0V0G9Q8rNKPnMgJgl-SLFpo1wQ1DI/2"}'
[Sun Apr 20 12:52:00 PM CST 2025] response='{"type":"urn:ietf:params:acme:error:rateLimited","title":"Too Many Requests","status":429,"detail":"Too many validation attempts during last hour","instance":"/acme/authz/foSBzMcfSWyvDq0V0G9Q8rNKPnMgJgl-SLFpo1wQ1DI/2"}'
[Sun Apr 20 12:52:00 PM CST 2025] huangxin.dev: Challenge error: {"type":"urn:ietf:params:acme:error:rateLimited","title":"Too Many Requests","status":429,"detail":"Too many validation attempts during last hour","instance":"/acme/authz/foSBzMcfSWyvDq0V0G9Q8rNKPnMgJgl-SLFpo1wQ1DI/2"}

I am not sure if their changes are already live, in which case this project might wish to consider adding warnings to documentations and upon the --server argument being used in command line.

[github-actions]

Please upgrade to the latest code and try again first. Maybe it's already fixed. acme.sh --upgrade If it's still not working, please provide the log with --debug 2, otherwise, nobody can help you.