Yes, it’s a bother when something good isn’t available in your part of the world.
I hoped mention of the dried Trill mixes, anyway, might be a good guide to finding something comparable in your neck of the woods. The veggie mix in particular is a nice one, including some combo of pumpkin, carrot, potato, capsicum, spinach, cabbage or celery, as well as some herbs. It is certainly handy to be able to add a variety of fruits and veggies to the daily menu in a format that is both quick and easy to dispense and won’t spoil - particularly if you’re going to be away for any length of time. And of course in your case the main, hoped-for advantage would be that your Dove will take to it better than he has to the fresh stuff (being more seed-like) - at least for starters.
I have today been in discussion with Doves Witness (a key contributor to this forum) about the dried fruit and veg component of a dove’s diet. He has alerted me to the potential for moulds or fungi to be present in dried fruits and sent a link to a study based on the US market:
Fungal Presence in Selected Tree Nuts and Dried Fruits
Just so you are aware. It highlights that pineapple and papaya/pawpaw are the safest bet, and raisins the worst. But he also mentions that there are naturally anti-fungal foods you can feed your Dove to counteract the possible adverse effects of this, in case you are concerned.
I hope your Dove likes the rape seed. Incidentally, I started mine on chia seed today and they gobbled it up. Interesting, your experience with the grey-striped sunflower seed. At first, my two Doves couldn’t ingest this seed either, and I habitually removed it from their mix as a potential choke hazard. After they were treated for trichomoniasis, though (a nasty parasite they brought with them from their birth aviary, which can cause lesions on the oesophagus), they had no trouble with it. And safflower - yes, seems to be a favourite across the board.