Tesseract seems to have problems recognizing basic alphanumeric codes. I've tried upscaling the image, changing to a monospace font and turning off the dictionary with no improvement in OCR quality.
The image below is recognized as the following:
i3DOIIH_My ActivitiesJ
MmRSes_My Accounm DBYCAe_My Submissions1
Hrti6_My Renewam
As you can see the recognized characters are completely off.
Your original image size is 1508 x 1092 pixels with 4 lines plus vertical spacing, it seems too big.
After reduced the image to 503 x 364 pixels, around 76 pixels height for the characters.
Tesseract gives 100% OCR result on the text.
The font size and background color do affect the OCR result. The best result would be obtained from text in black-in-white. Otherwise, image preprocessing is likely required.
Hope this help.
Train tesseract for these type of characters including special characters.Refer this Tesseract Training
