COMECOME download button opened a page: what next?
A COME button can open an external app page before any file is saved. Inspect that page and the browser's download list to see what happened.
Confirm the destination
Read the visible address and current page options. An opened page may offer another action, information or an access message. Do not treat the page load itself as evidence that an APK transferred or that Android installed anything.
Look for a transfer
Open your browser's Downloads view and check whether a new item exists. If it is absent, a file transfer has not been confirmed. If a transfer is pending, read the browser's explanation before pressing the page button again.
Continue from the confirmed stage
When a completed APK is present, open that item and read Android's prompt. If the destination does not offer a file, stop describing the action as a direct download. Avoid search-result mirrors or unrelated links simply to force the next stage.
A useful next step
Follow the download guide only after identifying whether you have an app page or a completed file.
Related: Read the browser's COME file-save confirmation