language school COE concern

Hello everyone, and sorry in advance for the long post. I recently applied to ISI Harajuku-Shibuya for the July 2026 intake, for a 1y business Japanese career course. I applied through GoGoNihon and got accepted by the school (successfully got the conditional offer of place), so now I’m just waiting for the COE, which should be issued on May 22nd (as announced by the school). To be honest, the waiting is making me quite anxious, even though I feel like my situation is probably fine. about my background: I already studied at ISI Harajuku-Shibuya from Oct 2023 to late Sept 2024. After that, I returned to France (my home country) for personal / family reasons. Then I came back to Japan on a Working Holiday Visa from Apr 2025 to Apr 2026 (leaving on April 3rd). I’ve already reached a conversational level and my goal now is to improve my business Japanese (敬語 etc.) to work in Japan. I have an MBA in hotel / tourism management and 2–3 years of experience in 5 star hotels, so my plan is to work in the hospitality / tourism industry in Japan after this. Application details: I’m a 28 y.o French male, my immigration history is clean (never overstayed, no legal issues anywhere, no illegal work either, never been involved in accidents, arrested by the police...) i’ve always paid health insurance and pension while in Japan. My retired father sponsors me with a total household income of around 200k€, including 50k€ of his own pension (about 4-5k€ monthly). I provided a statement that shows natural, regular bank activity (about 27k debit and 28k credit) and 12k€ of savings, previously got a COE approved in 2023 for my studies too. My only concern is that during my first year at ISI, I had around 80% attendance (some months 95% - 100%). When I applied again this year, ISI asked me to write an explanation letter so I did and in it I : apologised sincerely, took responsibility, explained temporary health + personal reasons, clarified that everything is now resolved  and that those issues wouldn’t affect my future studies anymore. Showed that despite those absences I still studied, progressed, and passed all levels, showed my commitment to maintaining high attendance going forward to meet immigration requirements. GGN reviewed it and said it was well written, and the school still accepted my application (alongside the letter) and submitted it to immigration. I guess I’m just looking for reassurance 😅   Has anyone been in a similar situation with attendance around 70–80% and still got their COE approved? Thanks in advance 🙏