[
    {
        "role": "user",
        "content": "how%20long%20a%20tandem%20invitation%20remains%20valid%20until%20it%20will%20be%20zactivated"
    },
    {
        "role": "assistant",
        "content": "It depends on which \u201cTandem\u201d and what kind of invitation you mean \u2014 there are several services and contexts using the name **Tandem**, each with different policies. If you're talking about **Tandem\u2019s invite or gift code** (for language learning / Tandem Pro benefits), here\u2019s what their policy says:\n\n---\n\n### \u23f3 Expiration of Tandem Invite / Gift Codes\n\n- Some invite codes **have expiration dates**, while others **do not**. ([tandem.zendesk.com](https://tandem.zendesk.com/hc/en-us/articles/34864994599826-Is-there-a-deadline-to-redeem-my-code?utm_source=openai))  \n- There\u2019s **no single standard duration** for all Tandem codes \u2014 it depends on how / when the code was issued. ([tandem.zendesk.com](https://tandem.zendesk.com/hc/en-us/articles/34864994599826-Is-there-a-deadline-to-redeem-my-code?utm_source=openai))  \n\n---\n\n### \u2705 What to Do\n\n- If you have the code, the best is to try redeeming it through the usual method (app, website). If it works, it\u2019s still valid.\n- If it fails because it\u2019s expired, you\u2019ll likely need a new code \u2014 and you might contact whoever gave it to you (or Tandem support).  \n- It\u2019s generally advisable to redeem such codes **as soon as possible**, in case there *is* an expiration. ([tandem.zendesk.com](https://tandem.zendesk.com/hc/en-us/articles/34864994599826-Is-there-a-deadline-to-redeem-my-code?utm_source=openai))  \n\n---\n\nIf you meant a different \u201cTandem\u201d (for example, a workplace tool, educational program, or another app), let me know \u2014 I can check that specific case for you."
    },
    {
        "role": "user",
        "content": "i%27m%20referring%20for%20the%20tandem%20used%20by%20the%20blindshell3"
    },
    {
        "role": "assistant",
        "content": "I couldn\u2019t find anything in the BlindShell Classic 3 Tandem manuals or official BlindShell sources that specifies a time limit (expiry) for invitations before they must be activated. ([blindshell.com](https://www.blindshell.com/manual/download.php?file=manual_mandala_en.pdf&utm_source=openai))\n\nHere\u2019s what the sources *do* confirm:\n\n- Invitations are created on the BlindShell device (using the Tandem app) and sent via SMS. ([blindshell.com](https://www.blindshell.com/manual/download.php?file=manual_mandala_en.pdf&utm_source=openai))  \n- After creating/sending, the invitation remains in a \u201cWaiting to accept\u201d state until the recipient clicks the link in the SMS and accepts it. ([blindshell.com](https://www.blindshell.com/manual/download.php?file=manual_mandala_en.pdf&utm_source=openai))  \n- Once accepted, the contact becomes \u201cActive\u201d and full communication features become available. ([blindshell.com](https://www.blindshell.com/manual/download.php?file=manual_mandala_en.pdf&utm_source=openai))  \n\n---\n\nIf you want, I can try digging further (including asking BlindShell support) to see if there's an internal or unstated time limit. Do you want me to look that up?"
    },
    {
        "role": "user",
        "content": "yes"
    },
    {
        "role": "assistant",
        "content": "I checked the official BlindShell Classic 3 documentation (manuals, user guides, and terms), and **didn\u2019t find any mention** of a time limit or expiration period for Tandem invitations that are \u201cWaiting to accept.\u201d ([blindshell.com](https://www.blindshell.com/manual/download.php?file=manual_mandala_fr.pdf&utm_source=openai))\n\nHere\u2019s a summary of what *is* stated and what remains unclear:\n\n---\n\n## \ud83d\udd0d What the Manuals Confirm\n\n- When you create an invitation via the Tandem app on BlindShell Classic 3, it gets sent as an SMS to the recipient. ([rehabmart.com](https://www.rehabmart.com/pdfs/blindshell_classic_3_-_user_manual.pdf?utm_source=openai))  \n- The invitation will remain in a \u201cWaiting to accept\u201d (or \u201cInvitation en attente...\u201d) state until the recipient accepts it. ([blindshell.com](https://www.blindshell.com/manual/download.php?file=manual_mandala_fr.pdf&utm_source=openai))  \n- After acceptance, communication features (chat, voice/video, remote assistance) become available. ([rehabmart.com](https://www.rehabmart.com/pdfs/blindshell_classic_3_-_user_manual.pdf?utm_source=openai))  \n\n---\n\n## \u2753 What the Manuals Don\u2019t Say\n\n- There is **no statement** regarding how long an invitation stays valid while it is in \u201cwaiting\u201d status.  \n- Nothing in the terms and conditions or other legal/technical documents specifies any internal expiration (e.g. 24 hours, 7 days, 30 days). ([tandem.blindshell.com](https://tandem.blindshell.com/terms-and-conditions?utm_source=openai))\n\n---\n\nIf you like, I could try contacting or finding a BlindShell support source (forum, help desk) for you \u2014 they may have a policy that hasn\u2019t been included in the user-facing documentation. Do you want me to do that?"
    }
]