Very sorry to hear @ohbee. We’ve never met, but somehow I feel like I know you, from spending too much time on this forum agonising over the never-ending PT GV sh*tshow.
If it helps, here’s some AI-generated advice… of course always vet anything created by AI 
Impact of Divorce During Pending Application
If a divorce occurs while the ARI visa application is pending, the dependent spouse’s eligibility is likely to be affected. The marital relationship is a key criterion for inclusion, and a divorce would sever this link. Based on general immigration principles, changes in circumstances, such as the end of a marriage, must be reported to the immigration authority, in this case, the Agency for Integration, Migration and Asylum (AIMA), formerly SEF. The Law on Foreigners (Law no. 23/2007, of 4 July) does not explicitly address this scenario for pending ARI applications but provides insights into family reunification, which may offer indirect guidance.
Under Articles 98-108 of the Law on Foreigners, family reunification allows eligible family members, including spouses, to join the primary resident, with conditions such as proof of accommodation and means of subsistence. Notably, Article 107 states that after two years, family members can obtain autonomous residence permits, or earlier in exceptional cases, such as divorce or domestic violence. However, this provision applies to those already residing in Portugal, not to pending applications. For a pending ARI visa, the dependent spouse, no longer married, would likely be ineligible to proceed as a dependent, potentially leading to their part of the application being denied while the primary applicant’s application could continue.
Notification and Procedural Requirements
It is essential for the primary applicant to notify AIMA of the divorce to maintain transparency and comply with immigration regulations. The EU Blue Card provisions under Article 121-G(2) of the same law require holders to communicate changes affecting their status within the first two years, preferably in advance, which suggests a similar expectation for ARI visa applicants. Failure to report could result in complications, such as application delays or rejection. The primary applicant should seek guidance from AIMA or consult immigration lawyers…
Comparative Insights and Exceptions
An interesting detail is that some immigration systems allow for consideration of the relationship’s status at the time of application, even if it changes later, provided it was genuine. However, Portuguese law, as per the available information, leans toward assessing eligibility at the time of decision, which could disadvantage the dependent spouse post-divorce. Additionally, the Law on Foreigners mentions fraud checks for marriages entered for immigration purposes (Article 108), but this is more relevant to initial applications rather than changes during processing.