Hi @용민 김,
Welcome to Microsoft Q&A!
If you need the VS2019 bootstrapper file, please download it from the page:
https://learn.microsoft.com/en-us/visualstudio/releases/2019/system-requirements#download
About the Visual Studio Subscriptions site, you can try to open it using the link below > Download:
https://visualstudio.microsoft.com/vs/older-downloads/#visual-studio-2019-and-other-products
Or directly open Visual Studio Subscriptions - Downloads or Product Keys with your browser.
Sincerely,
Anna
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.