You run a search in Perplexity Pro and get an answer but no source citations appear below it. This can happen with complex queries, after a long conversation thread, or when the AI fails to extract reliable references from its search results. The issue is not a permanent bug but a behavior triggered by specific … Read more
You are trying to add a colleague to a Perplexity Space but the invite button does nothing, the email field rejects valid addresses, or you see a generic error message. This problem usually occurs because the person you are inviting does not have a Perplexity account or because your Space subscription plan limits the number … Read more
You have a valid Perplexity API key, but your requests return empty or null answers. The API call succeeds without an error, yet the response contains no content. This problem often occurs due to missing or incorrect parameters in the request body or headers. This article explains the root causes and provides step-by-step fixes to … Read more
You create a Perplexity Collection to organize your research threads, but the threads you add disappear after you close the browser or refresh the page. This problem occurs when the browser’s local storage becomes corrupted or when the user account sync fails to write thread metadata to Perplexity’s servers. This article explains the root cause … Read more
You set Perplexity to Academic focus, then add a source filter like site:edu or site:nih.gov, but the results still include non-academic websites. This happens because Perplexity treats the focus mode and the source filter as separate query layers rather than combining them. The Academic focus mode selects a specific model and search domain, while the … Read more
You log into your Perplexity account, navigate to the billing section, and find no invoice listed for your recent payment. This issue often occurs because the invoice is generated only after a specific billing cycle completes or due to a temporary synchronization delay between the payment processor and your account. This article explains why invoices … Read more
You are trying to export a Perplexity Page to PDF and the button does nothing, or the export fails without warning. This problem usually happens because the browser blocks pop-ups for Perplexity or because the page content contains unsupported elements that break the export process. This article explains why the export fails and provides step-by-step … Read more
You try to upload a large PDF to Perplexity, but the upload fails with no clear error message. This problem occurs because Perplexity enforces a strict file size limit on uploaded documents, typically 25 MB per file. This article explains the exact file size cap, why Perplexity imposes this limit, and how to work around … Read more
You select Pro Search in Perplexity expecting deep reasoning and cited sources, but the interface switches to Quick Search with minimal context and no follow-up questions. This fallback happens when the system detects that your query does not require the advanced model or when your account has reached its Pro Search daily usage limit. This … Read more
You ask Perplexity a question and get a well-cited answer. But when you click a source link, the page fails to load. The browser shows an error or a blank screen. This problem makes Perplexity less useful because you cannot verify the information. The root cause is often a misconfigured URL or a restriction on … Read more