Is it permissible to write Qur’anic verses with incorrect diacritics on social media, such as: ( آنِ آلَـلَهّ وٌمًلَـآئـكتٌهّ يَصّلَــــوٌنِ عٌـلَيَ آلَنِبًـيَ يَآ آيَــهّآ آلَـذِيَـنِ آمًنَوٌ صّـلَوٌ عٌـلَيَهّ وٌسِلَــمًوٌ تٌسِـلَيَمًآ ), and what is the legitimate argument to convince those who do so that it is impermissible?

It is forbidden to intentionally shape the Quran in a way that contradicts its recitation, or to divide a Quranic word. The writing of the Companions in the Mushaf must be followed. Advising those who violate this is a religious obligation, in accordance with the texts on enjoining good and forbidding evil. If they do not respond, you must be patient, as da'wah (inviting to Islam) requires patience. Scholars have differed on the obligation of forbidding evil when there is no expectation of benefit; some held it to be obligatory, while others held it to be merely recommended.