when ace2 receptors are not present in the lungs will we experience any disturbance or suffer from any other problems
According to my cursory and unprofessional assessment, the most prominent issue would be hypertension, flanked by excessive retention of water, sodium ions, and chloride ions, due to the boatloads of angiotensin II just sitting around. Potassium ions would be excreted gratuitously, however. The lack of the ACE2 receptors has been (ostensibly) linked to Hartnup disease as well, so make of that what you will.
Once again, I'm not a medical professional, so take my word with a bucketful of salt.