ShortDOI Plugin Cannot Retrieve DOIs for Highly-Cited Papers

[Wangjhbh]

Dear Developer,

I'm currently using Zotero version 7.0.11 (64-bit) along with the Zotero-ShortDOI plugin. However, I'm experiencing an issue where the plugin cannot retrieve DOIs for some highly-cited papers, including the following:

BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding
The Natural Language Decathlon: Multitask Learning as Question Answering
Improving Language Understanding by Generative Pre-training
Language Models Are Unsupervised Multitask Learners
Exploring the Limits of Transfer Learning with a Unified Text-to-Text Transformer
For example, the paper "BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding", which has over 100k citations, cannot be updated with a DOI through the plugin.

I'm not sure if this is a usage issue on my end or a limitation of the plugin. Could you please help clarify this? I would appreciate any guidance on resolving the issue.

Thank you in advance!

Best regards,
Han